On my Arch system I have installed jupyter-notebook version 6.4.4 and Code - OSS version 1.61.0. with Python (v2021.9.1246542782) extension and with Jupyter (v2021.9.100) extension.

When I try to open a .ipynb file the program returns the following message:

Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information.

and will not execute the notebook.

If I then toggle the developer tools, what I find is a series of errors of the form:

Error: Unable to read file '/usr/lib/code/extensions/markdown-language-features/notebook-out/index.js' (Error: Unable to resolve nonexistent file '/usr/lib/code/extensions/markdown-language-features/notebook-out/index.js')

GET https://file+.vscode-resource.vscode-webview.net/usr/lib/code/extensions/markdown-language-features/notebook-out/index.js net::ERR_ABORTED 404

Uncaught (in promise) TypeError: Failed to fetch dynamically imported module: https://file+.vscode-resource.vscode-webview.net/usr/lib/code/extensions/markdown-language-features/notebook-out/index.js

Uncaught (in promise) TypeError: Failed to fetch dynamically imported module: https://file+.vscode-resource.vscode-webview.net/usr/lib/code/extensions/markdown-language-features/notebook-out/index.js

Any suggestion is appreciated.