Jupyter Kernel Fails to Start Over Remote-SSH: ‘Unexpected end of JSON input’ Error

[Xinwan-E-Hu]

Environment data

• VS Code version: 1.100.3 (Remote-SSH)
• Jupyter Extension version (available under the Extensions sidebar): 2025.4.1
• Python Extension version (available under the Extensions sidebar): 2025.6.1
• OS (Windows | Mac | Linux distro) and version: macOS (local), Ubuntu (remote)
• Python and/or Anaconda version: Python 3.10.14 (Anaconda)
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): conda
• Jupyter server running: Remote

Expected behaviour

The embodied_metalearning Jupyter kernel should launch and allow code cells to execute in .ipynb files when connected via VS Code Remote-SSH.

Actual behaviour

The Jupyter kernel fails to start with the error:
SyntaxError: Unexpected end of JSON input.
Only the R kernel is detected, and Python kernels appear missing.
Running Python scripts in the terminal also fails with the same error.
When accessing the same machine via TeamViewer, everything works fine — including running Jupyter Lab manually. And works well when other people ssh to it.

Steps to reproduce:

[NOTE: Self-contained, minimal reproducing code samples are extremely helpful and will expedite addressing your issue]

1. SSH into remote machine (evan@10.81.105.145) via VS Code Remote-SSH
2. Activate Conda environment (conda activate embodied_metalearning)
3. Open a Jupyter notebook
4. Select kernel "Python (embodied_metalearning)"
5. Attempt to execute a cell

Logs

Output for Jupyter in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Jupyter)

[warn] Failed to get Python interpreter details from Python Extension API for ~/anaconda3/envs/embodied_metalearning/bin/python SyntaxError: Unexpected end of JSON input  
[error] Failed to connect raw kernel session: SyntaxError: Unexpected end of JSON input  
[warn] Kernel Error, context = start Error: Failed to start the Kernel 'embodied_metalearning (Python 3.10.14)'  
[error] Failed to shutdown kernel... Cannot read properties of undefined (reading 'dispose')

Output for Jupyter in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Jupyter)

XXX

[DonJayamanne]

Please could you enable logging as follows:

• Open settings & go into Jupyter->Logging
• Change the value to trace
• Reload VS Code,
• Attempt to repro the issue & then copy the output from the Jupyter output panel (use the command Jupyter: Show Output to get to the logs).

[DonJayamanne]

Running Python scripts in the terminal also fails with the same error.

Please can you share a screen shot of this

[Xinwan-E-Hu]

I assume this is the Jupyter out you want:

Show Logs

Visual Studio Code (1.100.3, ssh-remote, desktop)
Jupyter Extension Version: 2025.4.1.
Python Extension Version: 2025.6.1.
Pylance Extension Version: 2025.5.1.
Platform: linux (x64).
Home = /home/evan
Temp Storage folder ~/.vscode-server/data/User/globalStorage/ms-toolsai.jupyter/version-2025.4.1
Workspace folder ~/Documents/Schaffer_lab_projects/embodied_transferlearning
13:33:53.665 [debug] Start refreshing Kernel Picker (1749749633665)
13:33:53.744 [info] Deleting old temp dir ~/.vscode-server/data/User/globalStorage/ms-toolsai.jupyter/version-2025.2.0
13:33:54.316 [trace] Kernel Spec for 'Python 3 (ipykernel)' (~/.local/share/jupyter/kernels/python3/kernel.json) is hidden. (isDefaultKernelSpec = true, language = python, registrationInfo = undefined)
13:33:54.316 [trace] Kernel Spec for 'Python 3' (/usr/share/jupyter/kernels/python3/kernel.json) is hidden. (isDefaultKernelSpec = true, language = python, registrationInfo = undefined)
13:33:54.317 [debug] Get Custom Env Variables, Class name = Mm, completed in 653ms, has a truthy return value, Arg 1: undefined, Arg 2: "RunPythonCode"
13:33:54.317 [debug] Jupyter Paths /kernels: 
13:33:54.318 [debug] Kernel Spec Root Paths, /usr/share/jupyter/kernels, /usr/local/share/jupyter/kernels, ~/.local/share/jupyter/kernels
13:33:54.318 [warn] No interpreter with path ~/anaconda3/envs/flygenvectors/bin/python found in Python API, will convert Uri path to string as Id ~/anaconda3/envs/flygenvectors/bin/python
13:33:54.319 [warn] No interpreter with path ~/anaconda3/envs/embodied_metalearning/bin/python found in Python API, will convert Uri path to string as Id ~/anaconda3/envs/embodied_metalearning/bin/python
13:33:54.319 [warn] No interpreter with path ~/anaconda3/envs/socialpy/bin/python found in Python API, will convert Uri path to string as Id ~/anaconda3/envs/socialpy/bin/python
13:33:54.320 [warn] No interpreter with path ~/anaconda3/envs/DEEPLABCUT/bin/python found in Python API, will convert Uri path to string as Id ~/anaconda3/envs/DEEPLABCUT/bin/python
13:33:54.320 [warn] No interpreter with path ~/anaconda3/envs/S1DZ/bin/python found in Python API, will convert Uri path to string as Id ~/anaconda3/envs/S1DZ/bin/python
13:33:54.330 [trace] Python API env change detected, add => '~/anaconda3/bin/python'
13:33:54.330 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/bin/python
13:33:54.358 [warn] Duplicate kernel found S1DZ ~/anaconda3/envs/S1DZ/bin/python in ~/.local/share/jupyter/kernels/s1dz/kernel.json
13:33:54.359 [trace] Hiding default KernelSpec ~/anaconda3/bin/python for interpreter ~/anaconda3/bin/python (KernelSpec file ~/anaconda3/share/jupyter/kernels/python3/kernel.json)
13:33:54.360 [trace] Python API env change detected, add => '/bin/python'
13:33:54.360 [trace] Search for KernelSpecs in Interpreter /bin/python
13:33:54.367 [trace] Python API env change detected, add => '~/anaconda3/envs/lisbet_latest_python/bin/python'
13:33:54.367 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/lisbet_latest_python/bin/python
13:33:54.382 [trace] Python API env change detected, add => '~/anaconda3/envs/emb_LLM/bin/python'
13:33:54.382 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/emb_LLM/bin/python
13:33:54.384 [trace] Python API env change detected, add => '~/anaconda3/envs/CEBRA/bin/python'
13:33:54.384 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/CEBRA/bin/python
13:33:54.386 [trace] Python API env change detected, add => '~/anaconda3/envs/flygenvectors/bin/python'
13:33:54.386 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/flygenvectors/bin/python
13:33:54.388 [trace] Python API env change detected, add => '~/anaconda3/envs/lisbet-env/bin/python'
13:33:54.388 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/lisbet-env/bin/python
13:33:54.390 [trace] Python API env change detected, add => '~/anaconda3/envs/lfads-torch/bin/python'
13:33:54.391 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/lfads-torch/bin/python
13:33:54.391 [trace] Hiding default KernelSpec ~/anaconda3/envs/emb_LLM/bin/python for interpreter ~/anaconda3/envs/emb_LLM/bin/python (KernelSpec file ~/anaconda3/envs/emb_LLM/share/jupyter/kernels/python3/kernel.json)
13:33:54.393 [trace] Hiding default KernelSpec ~/anaconda3/envs/CEBRA/bin/python for interpreter ~/anaconda3/envs/CEBRA/bin/python (KernelSpec file ~/anaconda3/envs/CEBRA/share/jupyter/kernels/python3/kernel.json)
13:33:54.393 [trace] Python API env change detected, add => '~/anaconda3/envs/mdgl2/bin/python'
13:33:54.394 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/mdgl2/bin/python
13:33:54.395 [trace] Hiding default KernelSpec /python for interpreter ~/anaconda3/envs/flygenvectors/bin/python (KernelSpec file ~/anaconda3/envs/flygenvectors/share/jupyter/kernels/python3/kernel.json)
13:33:54.396 [trace] Python API env change detected, add => '~/anaconda3/envs/ZEBRA/bin/python'
13:33:54.396 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/ZEBRA/bin/python
13:33:54.396 [trace] Hiding default KernelSpec ~/anaconda3/envs/lisbet-env/bin/python for interpreter ~/anaconda3/envs/lisbet-env/bin/python (KernelSpec file ~/anaconda3/envs/lisbet-env/share/jupyter/kernels/python3/kernel.json)
13:33:54.398 [trace] Python API env change detected, add => '/usr/bin/python'
13:33:54.398 [trace] Search for KernelSpecs in Interpreter /usr/bin/python
13:33:54.400 [trace] Hiding default KernelSpec /python for interpreter ~/anaconda3/envs/lfads-torch/bin/python (KernelSpec file ~/anaconda3/envs/lfads-torch/share/jupyter/kernels/python3/kernel.json)
13:33:54.401 [trace] Python API env change detected, add => '~/anaconda3/envs/social_foraging/bin/python'
13:33:54.401 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/social_foraging/bin/python
13:33:54.402 [trace] Hiding default KernelSpec ~/anaconda3/envs/mdgl2/bin/python for interpreter ~/anaconda3/envs/mdgl2/bin/python (KernelSpec file ~/anaconda3/envs/mdgl2/share/jupyter/kernels/python3/kernel.json)
13:33:54.403 [trace] Python API env change detected, add => '~/anaconda3/envs/lisbet_custom/bin/python'
13:33:54.403 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/lisbet_custom/bin/python
13:33:54.405 [trace] Python API env change detected, add => '~/anaconda3/envs/MotorNet/bin/python'
13:33:54.405 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/MotorNet/bin/python
13:33:54.406 [trace] Hiding default KernelSpec ~/anaconda3/envs/ZEBRA/bin/python for interpreter ~/anaconda3/envs/ZEBRA/bin/python (KernelSpec file ~/anaconda3/envs/ZEBRA/share/jupyter/kernels/python3/kernel.json)
13:33:54.407 [trace] Python API env change detected, add => '~/anaconda3/envs/embodied_metalearning/bin/python'
13:33:54.408 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/embodied_metalearning/bin/python
13:33:54.410 [trace] Python API env change detected, add => '~/anaconda3/envs/S1DZ/bin/python'
13:33:54.410 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/S1DZ/bin/python
13:33:54.412 [trace] Hiding default KernelSpec /python for interpreter ~/anaconda3/envs/social_foraging/bin/python (KernelSpec file ~/anaconda3/envs/social_foraging/share/jupyter/kernels/python3/kernel.json)
13:33:54.412 [trace] Python API env change detected, add => '~/anaconda3/envs/DEEPLABCUT/bin/python'
13:33:54.412 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/DEEPLABCUT/bin/python
13:33:54.414 [trace] Hiding default KernelSpec ~/anaconda3/envs/lisbet_custom/bin/python for interpreter ~/anaconda3/envs/lisbet_custom/bin/python (KernelSpec file ~/anaconda3/envs/lisbet_custom/share/jupyter/kernels/python3/kernel.json)
13:33:54.415 [trace] Python API env change detected, add => '~/anaconda3/envs/socialpy/bin/python'
13:33:54.415 [trace] Search for KernelSpecs in Interpreter ~/anaconda3/envs/socialpy/bin/python
13:33:54.417 [trace] Hiding default KernelSpec /python for interpreter ~/anaconda3/envs/MotorNet/bin/python (KernelSpec file ~/anaconda3/envs/MotorNet/share/jupyter/kernels/python3/kernel.json)
13:33:54.418 [trace] Hiding default KernelSpec /python for interpreter ~/anaconda3/envs/embodied_metalearning/bin/python (KernelSpec file ~/anaconda3/envs/embodied_metalearning/share/jupyter/kernels/python3/kernel.json)
13:33:54.418 [trace] Hiding default KernelSpec ~/anaconda3/envs/S1DZ/bin/python for interpreter ~/anaconda3/envs/S1DZ/bin/python (KernelSpec file ~/anaconda3/envs/S1DZ/share/jupyter/kernels/python3/kernel.json)
13:33:54.419 [trace] Hiding default KernelSpec ~/anaconda3/envs/DEEPLABCUT/bin/python for interpreter ~/anaconda3/envs/DEEPLABCUT/bin/python (KernelSpec file ~/anaconda3/envs/DEEPLABCUT/share/jupyter/kernels/python3/kernel.json)
13:33:54.419 [trace] Hiding default KernelSpec /python for interpreter ~/anaconda3/envs/socialpy/bin/python (KernelSpec file ~/anaconda3/envs/socialpy/share/jupyter/kernels/python3/kernel.json)
13:33:54.419 [trace] Python API env change detected, add => '/bin/python2'
13:33:54.419 [trace] Search for KernelSpecs in Interpreter /bin/python2
13:33:54.421 [trace] Python API env change detected, add => '/usr/bin/python2'
13:33:54.421 [trace] Search for KernelSpecs in Interpreter /usr/bin/python2
13:33:54.424 [trace] Python API env change detected, add => '/bin/python3.7'
13:33:54.424 [trace] Search for KernelSpecs in Interpreter /bin/python3.7
13:33:54.426 [trace] Python API env change detected, add => '/usr/bin/python3.7'
13:33:54.426 [trace] Search for KernelSpecs in Interpreter /usr/bin/python3.7
13:33:54.463 [trace] Python API env change detected, add => '/usr/bin/python3.8'
13:33:54.463 [trace] Search for KernelSpecs in Interpreter /usr/bin/python3.8
13:33:54.466 [trace] Python API env change detected, add => '/bin/python3.8'
13:33:54.466 [trace] Search for KernelSpecs in Interpreter /bin/python3.8
13:33:54.522 [debug] KernelProvider switched kernel to id = .jvsc74a57bd03bb46d27c8256a51fdc3167405c3c1e5fe842fbb8ddb7bba24c9d1cd10999ace.~/anaconda3/envs/embodied_metalearning/python.~/anaconda3/envs/embodied_metalearning/python.-m#ipykernel_launcher
13:33:54.523 [debug] start the kernel, options.disableUI=true for ~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb
13:33:54.548 [trace] Registering commtarget jupyter.widget
13:33:54.549 [debug] Controller selection change completed
13:33:54.552 [info] Starting Kernel (Python Path: ~/anaconda3/envs/embodied_metalearning/bin/python, Conda, 3.10.14) for '~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb' (disableUI=true)
13:33:54.552 [trace] Creating raw notebook for resource '~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb'
13:33:54.570 [debug] Launching kernel .jvsc74a57bd03bb46d27c8256a51fdc3167405c3c1e5fe842fbb8ddb7bba24c9d1cd10999ace.~/anaconda3/envs/embodied_metalearning/python.~/anaconda3/envs/embodied_metalearning/python.-m#ipykernel_launcher for ~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb in ~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning with ports 9046, 9045, 9049, 9047, 9048
13:33:54.864 [warn] Failed to get Python interpreter details from Python Extension API for ~/anaconda3/envs/DEEPLABCUT/bin/python [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:33:54.864 [warn] Failed to get Python interpreter details from Python Extension API for ~/anaconda3/envs/embodied_metalearning/bin/python [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:33:54.864 [warn] Failed to get Python interpreter details from Python Extension API for ~/anaconda3/envs/socialpy/bin/python [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:33:54.864 [warn] Failed to get Python interpreter details from Python Extension API for ~/anaconda3/envs/socialpy/bin/python [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:33:54.864 [warn] Failed to get Python interpreter details from Python Extension API for ~/anaconda3/envs/socialpy/bin/python [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:33:54.864 [warn] Failed to get Python interpreter details from Python Extension API for ~/anaconda3/envs/flygenvectors/bin/python [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:33:54.864 [warn] Failed to get Python interpreter details from Python Extension API for ~/anaconda3/envs/S1DZ/bin/python [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:33:54.865 [trace] Kernel deeplabcut matches ~/anaconda3/envs/DEEPLABCUT/bin/python based on display name
13:33:54.866 [trace] Kernel socialpy matches ~/anaconda3/envs/socialpy/bin/python based on display name
13:33:54.866 [trace] Kernel flygenvectors matches ~/anaconda3/envs/flygenvectors/bin/python based on display name
13:33:54.867 [trace] Kernel undefined.-xfrozen_modules=off matches ~/anaconda3/envs/S1DZ/bin/python based on display name
13:33:54.867 [warn] Kernel Spec for 'Python (embodied_metalearning)' (~/.local/share/jupyter/kernels/embodied_metalearning/kernel.json) hidden, as we cannot find a matching interpreter argv = '~/anaconda3/envs/embodied_metalearning/bin/python'. To resolve this, please change '~/anaconda3/envs/embodied_metalearning/bin/python' to point to the fully qualified Python executable.
13:33:54.867 [warn] Kernel Spec for 'Python (3.13)' (~/.local/share/jupyter/kernels/<username>/kernel.json) hidden, as we cannot find a matching interpreter argv = '~/anaconda3/envs/socialpy/bin/python'. To resolve this, please change '~/anaconda3/envs/socialpy/bin/python' to point to the fully qualified Python executable.
13:33:54.867 [warn] Kernel Spec for 'Python (some_env)' (~/.local/share/jupyter/kernels/some_env/kernel.json) hidden, as we cannot find a matching interpreter argv = '~/anaconda3/envs/socialpy/bin/python'. To resolve this, please change '~/anaconda3/envs/socialpy/bin/python' to point to the fully qualified Python executable.
13:33:54.868 [error] Failed to get env variables for interpreter, hence no variables for Kernel [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:33:54.873 [debug] Dispose Kernel process undefined.
13:33:54.874 [error] Failed to connect raw kernel session: SyntaxError: Unexpected end of JSON input
13:33:54.874 [debug] End refreshing Kernel Picker (1749749633665)
13:33:54.874 [error] Failed to connect raw kernel session: SyntaxError: Unexpected end of JSON input
13:33:54.874 [warn] Failed to shutdown kernel, .jvsc74a57bd03bb46d27c8256a51fdc3167405c3c1e5fe842fbb8ddb7bba24c9d1cd10999ace.~/anaconda3/envs/embodied_metalearning/python.~/anaconda3/envs/embodied_metalearning/python.-m#ipykernel_launcher [TypeError: Cannot read properties of undefined (reading 'dispose')
	at dT.shutdown (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:301:13745)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async pT.shutdown (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:301:22578)]
13:33:54.874 [trace] failed to create IJupyterKernelConnectionSession in kernel, UI Disabled = true [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:33:54.875 [warn] Error occurred while trying to start the kernel, options.disableUI=true [n [Error]: 
	at new n (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:98:4480)
	at n.from (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:100:56)
	at T_.createJupyterSession (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:282:38139)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T_.startJupyterSession (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:282:34846)
	at async T_.start (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:282:30892)
	at async n.wrapKernelMethodImpl (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:301:84016)

SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)] {
  category: 'unknown',
  isJupyterError: true,
  originalException: [SyntaxError: Unexpected end of JSON input
  	at JSON.parse (<anonymous>)
  	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
  	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
  	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
}
13:33:54.925 [trace] Conda file is ~/anaconda3/bin/conda
13:33:55.059 [debug] Disposed Kernel process undefined.
13:34:01.255 [debug] Handle Execution of Cells 2 for ~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb
13:34:01.256 [trace] Execute Notebook ~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb. Step 1
13:34:01.256 [trace] Connect to Kernel ~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb. Step 2
13:34:01.256 [debug] start the kernel, options.disableUI=false for ~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb
13:34:01.257 [info] Starting Kernel (Python Path: ~/anaconda3/envs/embodied_metalearning/bin/python, Conda, 3.10.14) for '~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb' (disableUI=false)
13:34:01.257 [trace] Creating raw notebook for resource '~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb'
13:34:01.267 [debug] Launching kernel .jvsc74a57bd03bb46d27c8256a51fdc3167405c3c1e5fe842fbb8ddb7bba24c9d1cd10999ace.~/anaconda3/envs/embodied_metalearning/python.~/anaconda3/envs/embodied_metalearning/python.-m#ipykernel_launcher for ~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning/no-metalearning_working_pm_fixedCOB.ipynb in ~/Documents/Schaffer_lab_projects/embodied_transferlearning/embodied_metalearning with ports 9054, 9053, 9057, 9055, 9056
13:34:01.268 [error] Failed to get env variables for interpreter, hence no variables for Kernel [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:34:01.268 [debug] Dispose Kernel process undefined.
13:34:01.268 [error] Failed to connect raw kernel session: SyntaxError: Unexpected end of JSON input
13:34:01.268 [error] Failed to connect raw kernel session: SyntaxError: Unexpected end of JSON input
13:34:01.268 [warn] Failed to shutdown kernel, .jvsc74a57bd03bb46d27c8256a51fdc3167405c3c1e5fe842fbb8ddb7bba24c9d1cd10999ace.~/anaconda3/envs/embodied_metalearning/python.~/anaconda3/envs/embodied_metalearning/python.-m#ipykernel_launcher [TypeError: Cannot read properties of undefined (reading 'dispose')
	at dT.shutdown (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:301:13745)
	at async pT.shutdown (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:301:22578)]
13:34:01.268 [warn] Error occurred while trying to start the kernel, options.disableUI=false [n [Error]: 
	at new n (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:98:4480)
	at n.from (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:100:56)
	at T_.createJupyterSession (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:282:38139)
	at async T_.startJupyterSession (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:282:34846)
	at async T_.start (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:282:30892)
	at async n.wrapKernelMethodImpl (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:301:84016)

SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)] {
  category: 'unknown',
  isJupyterError: true,
  originalException: [SyntaxError: Unexpected end of JSON input
  	at JSON.parse (<anonymous>)
  	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
  	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
  	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
}
13:34:01.269 [warn] Kernel Error, context = start [n [Error]: 
	at new n (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:98:4480)
	at n.from (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:100:56)
	at T_.createJupyterSession (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:282:38139)
	at async T_.startJupyterSession (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:282:34846)
	at async T_.start (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:282:30892)
	at async n.wrapKernelMethodImpl (~/.vscode-server/extensions/ms-toolsai.jupyter-2025.4.1-linux-x64/dist/extension.node.js:301:84016)

SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)] {
  category: 'unknown',
  isJupyterError: true,
  originalException: [SyntaxError: Unexpected end of JSON input
  	at JSON.parse (<anonymous>)
  	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
  	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
  	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
}
13:34:01.270 [error] Checking if product is installed, Class name = dD, completed in 1ms, has a falsy return value, Arg 1: 19, Arg 2: undefined, Return Value: undefined [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:34:01.270 [error] Are Dependencies Installed, Class name = op, completed in 1ms, has a falsy return value, Arg 1: "~/anaconda3/envs/embodied_metalearning/python.~/anaconda3/envs/embodied_metalearning/python.-m#ipykernel_launcher", Arg 2: undefined, Arg 3: true, Return Value: undefined [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:34:01.270 [error] Error in notebook cell execution [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:34:01.270 [trace] Start cell 2 execution @ undefined (clear output)
13:34:01.271 [error] Error in execution (get message for cell) [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:34:01.578 [debug] Disposed Kernel process undefined.
13:34:01.596 [trace] Cell 2 completed in 0s (start: undefined, end: undefined)

[Xinwan-E-Hu]

And this is what I got when I ran this test.py when SSH.

[DonJayamanne]

@karthiknadig
Error in Python ext api

Failed to get Python interpreter details from Python Extension API for ~/anaconda3/envs/DEEPLABCUT/bin/python [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)
	at T.getInfoImpl (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674020)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async T.getEnvDirs (~/.vscode-server/extensions/ms-python.python-2025.6.1-linux-x64/out/client/extension.js:2:674290)]
13:33:54.864 [warn] Failed to get Python interpreter details from Python Extension API for ~/anaconda3/envs/embodied_metalearning/bin/python [SyntaxError: Unexpected end of JSON input
	at JSON.parse (<anonymous>)

[Xinwan-E-Hu]

@karthiknadig Hi could you help me take a look at this problem? Thanks a lot.