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claude-code - 💡(How to fix) Fix Session hangs/loops when image is sent with no text prompt via Remote Control

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Error Message

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

Fix Action

Fix / Workaround

RC image-only send (no text) → empty assistant response loops indefinitely API error: 400 messages: text content blocks must be non-empty, for every next prompt Error visible on app Workaround: manual JSONL truncation

Code Example

API Error: 400 messages: text content blocks must be non-empty
RAW_BUFFERClick to expand / collapse

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?

RC image-only send (no text) → empty assistant response loops indefinitely API error: 400 messages: text content blocks must be non-empty, for every next prompt Error visible on app Workaround: manual JSONL truncation

What Should Happen?

calude should be able to read the image and react, or react for missing text any way not hang

Error Messages/Logs

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

Steps to Reproduce

just prompt (paste from clipboard) for a screenshot and send, with no text.

next responses will be API error 400, session is hang

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

No response

Claude Code Version

Claude 1.7196.0 (2dbd78) 2026-05-12T05:34:40.000Z

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

No response

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#api#container setup#orchestration issue#cache issue#memory leak

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