Unable to run prompts within Copilot session

[Conrad2134]

Describe the bug

When attempting to run (any) prompts after starting a Copilot CLI session, I am met with the following error:

Execution failed: Cannot destructure property 'viewer' of 'I.data' as it is undefined.

This seemed to start happening out of nowhere. I was using Copilot CLI this morning and, after starting a new session, I started receiving the error. I did try clearing the npm cache, logs and such in the ~/.copilot folder, and uninstalling/reinstalling the CLI. Included error from the logs in additional context.

Affected version

0.0.354 Commit: 076bd172b

Steps to reproduce the behavior

1. copilot
2. Wait for session to load.
3. Prompt with "hi"

Expected behavior

No response

Additional context

Error from the logs:

2025-11-06T16:18:13.800Z [ERROR] Failed to fetch Copilot URL, using default: TypeError: Cannot destructure property 'viewer' of 'I.data' as it is undefined.

session-d7fd8d27-04d3-44d6-b951-3d19c9f73f83.log

[Conrad2134]

Update - it works now. Nothing changed on my end other than waiting 30 minutes 🤷‍♂️

Potentially related, but I was doing a lot of data fetching with the GitHub APIs and hit primary rate limits. Those reset after I had opened this issue, and so I'm kinda curious if that's what I was running into.

[andyfeller]

@Conrad2134 : First, apologies for the difficulties troubleshooting the underlying issue here and thank you for reporting back. 🙇

I was taking a look at the attached session and would love to try confirming if rate limiting was really the problem here. I see the logs redacted the user you were using with this, so I'm unsure if its the same as the user you're using to report the issue or not.

[Conrad2134]

@andyfeller it was my EMU account, and I figured it best just to redact it.

I did run down my graphql rate limit to 0 and found that I was able to continue using an existing copilot session that was already open, but I was not able to use a new copilot session or one that I had resumed, if that helps! Also happy to provide any other info I can or help in any other ways.