[BUG] in Claude Code sesstion, API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011CZ9DWrAFPPiMFaPWYkvph"}

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011CZ9DWrAFPPiMFaPWYkvph"} in the middle of a piece of work. Waiting and re-submitting a prompt resulted in the same message.

What Should Happen?

Claude should proceed with the work without this error.

Error Messages/Logs

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011CZ9DWrAFPPiMFaPWYkvph"}

Steps to Reproduce

It just happened mid-session in the VSCode Window for Claude Code

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

unknown- requesting version throws that same error

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_