[BUG] SyntaxError: Unexpected token 'C', "Claude con"... is not valid JSON Troubleshooting resources

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?

All the sudden, my Claude Code extension in VS Code couldn't respond due to this error message.

<img width="793" height="308" alt="Image" src="https://github.com/user-attachments/assets/0f236b49-265d-44db-b5fe-ef37a516cb55" />

What Should Happen?

The chat should be able to proceed after reading my instructions

Error Messages/Logs

SyntaxError: Unexpected token 'C', "Claude con"... is not valid JSON Troubleshooting resources

Steps to Reproduce

I am currently in my repo where nothing has changed, this issue happened all the sudden. Meanwhile my Codex extension is still working perfectly, so it could something on your side

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

V2.0.49

Claude Code Version

V2.0.49

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

WSL (Windows Subsystem for Linux)

Additional Information

_No response_