The "path" argument must be of type string

[rccarlson]

Describe the bug

Copilot seems unable to run any commands. It just returns The "path" argument must be of type string. Received undefined every time.

 ╭───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
 │ > set up unsloth on this computer                                                                                                                                                 │
 ╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

 ● I'll help you set up Unsloth on this computer. Let me first explore the current
   directory to understand what we're working with.

 ✗ Read /c:/Users/carlril/source/repos/unsloth
   Path does not exist

 ✗ Check current directory
   $ pwd
   The "path" argument must be of type string. Received undefined

 ✗ Check current directory
   $ Get-Location
   The "path" argument must be of type string. Received undefined

 ● Let me try a different approach:

 ✗ Check current directory and list files
   $ pwd; ls
   The "path" argument must be of type string. Received undefined

 ● Operation cancelled by user

Affected version

0.0.332 Commit: ace227c

Steps to reproduce the behavior

All commands result in this error.

Expected behavior

No response

Additional context

No response

[rccarlson]

This is using claude-sonnet-4.5

[thekeenant]

Updating from Node 18.19.1 to Node 24.9.0 fixed the issue for me.

[williammartin]

@rccarlson, can you check if a node update (minimum supported is v22) resolves this for you?

[thekeenant]

I'm surprised I'm able to run Copilot CLI on an outdated version of Node. Can a better error message be shown if that is indeed the culprit?

[williammartin]

Created #341 to discuss that, thanks.

[EvanBoyle]

We're now enforcing a node version check. So closing this issue out.