[BUG] Claude Code encountered an error connecting to a local large model qwen3.5_27b, indicating a context limit violation.

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?

When using Claude Code 2.1.97 to connect to a local large model qwen3.5_27b, the following error occurred:
<img width="1023" height="767" alt="Image" src="https://github.com/user-attachments/assets/abdb0681-834b-4765-8746-7c1ed86ac9e5" />
I changed max_tokens but I still get this error, it always says that more than one token is allowed.

What Should Happen?

The system is expected to connect to a large local model and run normally after setting max_tokens.

Error Messages/Logs

Steps to Reproduce

1. Open PowerShell on your Windows system,using node v24.14.1

1. Execute Claude and type the test message "hi".

Claude Model

Other

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.97

Platform

Other

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_