copilot-chat--ask: Wrong type argument: number-or-marker-p, nil

[eamonnsullivan]

Hi, I'm new to Copilot and an Emacs user. I'm getting this error when try to send any prompts. I seem to login OK (I hit enter, open a browser, paste in the code and get an "all set" message or similar). I'm using straight.el on:

GNU Emacs 29.4 (build 2, aarch64-apple-darwin23.5.0, NS appkit-2487.60
 Version 14.5 (Build 23F79)) of 2024-07-04

My configuration is as follows:

(use-package copilot-chat
  :straight (:host github :repo "chep/copilot-chat.el" :files ("*.el"))
  :after (request org markdown-mode))

The other package I'm using seems to work as expected (i.e., I get offered code snippets):

(use-package copilot
  :straight (:host github :repo "copilot-emacs/copilot.el" :files ("*.el"))
  :bind (("C-c C-c" . copilot-accept-completion))
  :ensure t)

What else could I do to try and debug this? I suspect the nil here might be the login token, possibly? Does that mean something isn't where it is expected?

[eamonnsullivan]

I thought just occurred to me: Could the problem be that I'm using Copilot Business?

[kassick]

Could the problem be that I'm using Copilot Business?

I'm using business too and I don't get errors when using the chat.

[kassick]

Can you enable debug-on-error (M-x toggle-debug-on-error) and paste the backtrace here?

Also, could you describe how you triggered the error?

[eamonnsullivan]

Trace:

Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p nil)
  copilot-chat--auth()
  copilot-chat--ask("help" copilot-chat-prompt-cb)
  copilot-chat-prompt-send()
  funcall-interactively(copilot-chat-prompt-send)
  command-execute(copilot-chat-prompt-send)

(But see below -- there seems to be a problem with my access token.)

Steps to reproduce:

1. M-x copilot-chat-display
2. type 'help' then C-c RET

[chep]

Are the files ~/.cache/copilot-chat/token and ~/.config/copilot-chat/github-token consistent ?

token should be json data and github-token something like "ghu_something".

[eamonnsullivan]

Ah, is it reading it from the environment? I do have that variable set, with my personal (possibly inadequate) access token.

[eamonnsullivan]

Unsetting GITHUB_TOKEN does indeed result in a proper login, and I get a new token generated (in ~/.config/copilot-chat/github-token), but I get the same message and 403 status.

[eamonnsullivan]

I'll try again a little later, as I think there might be some caching involved. It just suddenly worked on the Mac after a few tries, so maybe the same will happen on Ubuntu.

[chep]

Yes you are right, the GITHUB_TOKEN variable is used if set. I should remove it, as we can see it can be confusing.

Remove all files again, call reset or restart emacs and it should work.

[eamonnsullivan]

It did work. Thank you for the help!

I do need that GITHUB_TOKEN for other programmes, so it would be good we didn't check that variable. But now I know how to fix the issue.

[chep]

I removed the use of the variable.