claude-code - 💡(How to fix) Fix [Bug] API Error: 400 Invalid Request - Image Processing Error Without Image Input [1 comments, 2 participants]

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/robin/.local/share/claude/versions/2.1.119 (expected in multi-process scenarios)\n at mH6 (/$bunfs/root/src/entrypoints/cli.js:2736:2177)\n at E$8 (/$bunfs/root/src/entrypoints/cli.js:2736:1257)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-24T08:06:50.630Z"},{"error":"Unable to determine image format","timestamp":"2026-04-24T08:08:38.567Z"},{"error":"Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"Could not process image"},"request_id":"req_011CaNFipwAxNCthiQHiPa9e"}\n at generate (/$bunfs/root/src/entrypoints/cli.js:11:55121)\n at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4943)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-24T08:08:39.429Z"}]

TL;DR

The issue might be resolved by ensuring that no image data is inadvertently sent with the request, as the API error suggests an issue with processing an image.

Guidance

• Verify that the request payload does not contain any image data, even if it's not intended to be sent.
• Check the code for any automatic attachment or inclusion of images in the request.
• Review the API documentation to ensure that the request format is correct and that there are no specific requirements for handling images.
• Consider adding error handling to catch and log any unexpected errors, such as the "Lock acquisition failed" error, to better understand the issue.

Example

No code snippet can be provided without more context, but ensuring that the request payload is correctly formatted and does not include any unexpected data is crucial.

Notes

The "Lock acquisition failed" error and the "Unable to determine image format" error suggest that there might be multiple issues at play, and resolving one might not fix the entire problem. The provided information does not specify how the request is being made or what the request payload looks like, which would be necessary for a more detailed analysis.

Recommendation

Apply workaround: Ensure that the request does not include any image data and verify the request format against the API documentation, as this directly addresses the error message received.