Start Native Python REPL errors: UNKNOWN notebook type: jupyter-notebook

[anthonykim1]

Discussed in #24590

^{Originally posted by ChiNoel-osu December 11, 2024}
When I try to start the REPL it shows this error message:

Smart send (Shift+Enter) gives the same error message:

This was working before, I was just using it, and I have no idea why it suddenly stopped working.

2024-12-12 11:55:02.185 [error] Error: UNKNOWN notebook type: jupyter-notebook
    at VUe.f (vscode-file://vscode-app/c:/Users/victor1.wang/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:1886:34374)
    at VUe.createUntitledNotebookTextModel (vscode-file://vscode-app/c:/Users/victor1.wang/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:1886:35512)
    at Y6e.$tryCreateNotebook (vscode-file://vscode-app/c:/Users/victor1.wang/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:780:43024)
    at Fdt.S (vscode-file://vscode-app/c:/Users/victor1.wang/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:3145:41680)
    at Fdt.Q (vscode-file://vscode-app/c:/Users/victor1.wang/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:3145:41458)
    at Fdt.M (vscode-file://vscode-app/c:/Users/victor1.wang/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:3145:40546)
    at Fdt.L (vscode-file://vscode-app/c:/Users/victor1.wang/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:3145:39650)
    at aee.value (vscode-file://vscode-app/c:/Users/victor1.wang/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:3145:38444)
    at x.B (vscode-file://vscode-app/c:/Users/victor1.wang/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:30:748)
    at x.fire (vscode-file://vscode-app/c:/Users/victor1.wang/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:30:967) python.startNativeREPL {"value":"ms-python.python","_lower":"ms-python.python"}

I don't have Jupyter extension installed. It was working without that extension too. I tried installing it now but still this error throws.
Terminal REPL works, but native REPL doesn't.

[ChiNoel-osu]

It somehow managed to fix itself today, really had no clue what's going on.

Here's my troubleshooting process:
If I delete all user data and install the Python extension alone, the REPL will work.
But as soon as I turned on setting sync and have all the settings and extensions synced, the REPL stopped working and throws that error message to me again.
I tried doing a clean reinstall of VS Code, same issue.
I tried disabling all extensions except the Python ones, the problem still persists.
I tried installing the jupyter extension, same issue. (REPL was working without this extension too)
I tried downgrading Python extension from v2024.22.0 to v2024.20.0, same issue.
Then I tried going into setting.json, and it doesn't seem to have anything related to REPL. But still I cleared up some grayed out or unnecessary settings. After that the REPL still doesn't work. I also don't think setting.json is causing the issue because REPL was working with this setting.json before.
And then I tried numerous of things including upgrading the Python extension back on and again deleting user data. Then in a session, the native REPL suddenly starts working again. Have no idea why.

Now everything is back to normal. But I think we should leave this issue open because this is quite bizarre.

I was using remote Python REPL (ssh to a server in my LAN) when the issue first happened, but this issue persists locally.