claude-code - 💡(How to fix) Fix [Bug] Anthropic API Error: cache_control cannot be set for empty text blocks when pasting images [1 comments, 2 participants]

API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.0.content.4.text: cache_control cannot be set for empty text blocks"},"request_id":"req_011CaQDeUrM1iB76EfW8ZXhV"}

TL;DR

The issue can be potentially resolved by modifying the frontend message construction logic to handle empty text blocks when pasting images from a remote control.

Guidance

• Investigate the message construction logic in the frontend code to identify the cause of the cache_control cannot be set for empty text blocks error.
• Verify if the error occurs when pasting images from other sources, such as local files, to determine if the issue is specific to the remote control.
• Check the differences in the UI and message construction logic between the project that works and the one that doesn't to identify potential discrepancies.
• Consider adding a temporary workaround to handle empty text blocks when pasting images, such as automatically adding a space or a placeholder text.

Notes

The issue seems to be specific to the frontend logic and the remote control, and the provided error message suggests that the problem lies in the way the message is constructed when pasting images.

Recommendation

Apply workaround: Modify the frontend message construction logic to handle empty text blocks when pasting images from a remote control, as this seems to be the most likely cause of the issue.