[BUG] API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id"

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?

<img width="649" height="141" alt="Image" src="https://github.com/user-attachments/assets/2cfbf7fd-9809-4c59-b557-77e38ae66d2c" />

What Should Happen?

Claude should respond with something other than an error to every request.

Error Messages/Logs

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011CZ9MPnR1aaK8uQQtGFmCN"}

Steps to Reproduce

Ask anything of Claud code in the Windows application

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.76 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_