[BUG] Image processing error blocks all chat input

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?

Error: API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"Could not process image"}}

Request ID: req_011CZgZ76dfywa7Mviqm22T9

Steps: Claude Code attempted to process an image, returned 400, and subsequently blocked all further prompts in the conversation. Starting a new conversation resolved it.

VS Code + Claude Code extension

What Should Happen?

Load image to edit background color/transparency.

Error Messages/Logs

Steps to Reproduce

Prompt to edit image background transparency from a webpage image.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.58 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_