JupyterLab warning: "Could not determine npm prefix: [WinError 2] The system cannot find the file specified"

Asked Jul 02 '23 at 04:21

Active Jul 03 '23 at 00:13

Viewed 547 times

I have the following error while starting JupyterLab (on Windows 10 x64):

[W 2023-07-02 06:52:30.881 ServerApp] Could not determine npm prefix: [WinError 2] The system cannot find the file specified

What does it mean and how to fix it?

I already have the latest version of standalone installation of Node.js (20.3.1), also I've installed Python package (pip install nodejs). Version checks work as expected. Node.js folder is in Path variable (system-wide). But the warning still remains.

edited Jul 03 '23 at 00:13

asked Jul 02 '23 at 04:21

EliiO

This warning can be ignored, unless you want to use LSP which is not yet released for Lab 4.0. – krassowski Jul 02 '23 at 22:04
What does `npm prefix -g` return for you? – krassowski Jul 02 '23 at 22:05
@krassowski, got it, thank you. `npm prefix -g` returns `C:\Users\%USERNAME%\AppData\Roaming\npm`. – EliiO Jul 03 '23 at 00:22

JupyterLab warning: "Could not determine npm prefix: [WinError 2] The system cannot find the file specified"

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