claude-code - 💡(How to fix) Fix [BUG] Error 500 [1 participants]

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anthropics/claude-code#48578Fetched 2026-04-16 06:56:18
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Error Message

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011Ca5jR2tTE9hhZpbqdk8hz"}

Code Example

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011Ca5jR2tTE9hhZpbqdk8hz"}
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Preflight Checklist

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

What's Wrong?

Claude code returns error 500 on every request

What Should Happen?

No error ;)

Error Messages/Logs

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011Ca5jR2tTE9hhZpbqdk8hz"}

Steps to Reproduce

Open file, prompt, see error

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

x

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

VS Code integrated terminal

Additional Information

No response

extent analysis

TL;DR

The issue is likely related to a regression in the Claude Code or Anthropic API, and a potential fix could involve investigating the API error and internal server error messages.

Guidance

  • Investigate the "Internal server error" message in the API error response to determine the root cause of the issue.
  • Check the Anthropic API documentation for any known issues or recent changes that may be causing the error.
  • Try using a different Claude model, such as a previous version, to see if the issue is specific to the Opus model.
  • Verify that the issue is not specific to the VS Code integrated terminal by trying to reproduce the error in a different terminal or shell.

Example

No code snippet is provided as the issue does not contain sufficient information to create a relevant example.

Notes

The lack of information about the last working version and additional details makes it difficult to provide a more specific solution. The issue may be related to a recent change in the Anthropic API or Claude Code.

Recommendation

Apply workaround: Try using a different Claude model or investigating the API error message to determine the root cause of the issue, as the problem is likely related to a regression and may require a temporary workaround until a fix is available.

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