[BUG] API Error: 400 messages: text content blocks must be non-empty

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="1292" height="917" alt="Image" src="https://github.com/user-attachments/assets/8a32628d-87df-4971-8476-2c7a99d6efc5" />

2.1.143 (Claude Code)

What Should Happen?

should reply

Error Messages/Logs

API Error: 400 messages: text content blocks must be non-empty

Steps to Reproduce

it's not taking any input

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.143

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

_No response_