[Bug] Anthropic API Error: Image dimensions exceed max size in multi-image requests

[andrewreece]

Bug Description
Sometimes I will randomly get an error like this: API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.40.content.5.image.source.base64.data: At least one of the image dimensions exceed max allowed
size for many-image requests: 2000 pixels"},"request_id":"req_011CV4ErX93DxuJTX2hQezZ4"}

When it appears, there's no way to fix it other than to restart Claude or run /clear.

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.0.37
• Feedback ID:

Errors

[{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at TX (/$bunfs/root/claude:1227:4395)\n    at <anonymous> (/$bunfs/root/claude:1227:4117)\n    at map (native:1:11)\n    at HI (/$bunfs/root/claude:1227:4109)\n    at PuB (/$bunfs/root/claude:2101:402)\n    at $WB (/$bunfs/root/claude:1361:198029)\n    at B7 (/$bunfs/root/claude:102:19663)\n    at e3 (/$bunfs/root/claude:104:42806)\n    at aF (/$bunfs/root/claude:104:38344)\n    at u1 (/$bunfs/root/claude:104:38272)","timestamp":"2025-11-11T17:16:51.809Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at TX (/$bunfs/root/claude:1227:4395)\n    at <anonymous> (/$bunfs/root/claude:1227:4117)\n    at map (native:1:11)\n    at HI (/$bunfs/root/claude:1227:4109)\n    at PuB (/$bunfs/root/claude:2101:402)\n    at $WB (/$bunfs/root/claude:1361:198029)\n    at B7 (/$bunfs/root/claude:102:19663)\n    at e3 (/$bunfs/root/claude:104:42806)\n    at aF (/$bunfs/root/claude:104:38344)\n    at u1 (/$bunfs/root/claude:104:38272)","timestamp":"2025-11-11T17:16:51.811Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at TX (/$bunfs/root/claude:1227:4395)\n    at <anonymous> (/$bunfs/root/claude:1227:4117)\n    at map (native:1:11)\n    at HI (/$bunfs/root/claude:1227:4109)\n    at PuB (/$bunfs/root/claude:2101:402)\n    at $WB (/$bunfs/root/claude:1361:198029)\n    at B7 (/$bunfs/root/claude:102:19663)\n    at e3 (/$bunfs/root/claude:104:42806)\n    at aF (/$bunfs/root/claude:104:38344)\n    at u1 (/$bunfs/root/claude:104:38272)","timestamp":"2025-11-11T17:16:51.811Z"},{"error":"Error: Lock file is already being held\n    at <anonymous> (/$bunfs/root/claude:87:11857)\n    at X (/$bunfs/root/claude:86:5167)\n    at <anonymous> (node:fs:243:13)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-11T17:16:59.201Z"},{"error":"Error: Request was aborted.\n    at _createMessage (/$bunfs/root/claude:232:4515)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-11T17:36:16.316Z"},{"error":"Error: Lock file is already being held\n    at <anonymous> (/$bunfs/root/claude:87:11857)\n    at X (/$bunfs/root/claude:86:5167)\n    at <anonymous> (node:fs:243:13)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-11T17:46:58.957Z"},{"error":"Error: Lock file is already being held\n    at <anonymous> (/$bunfs/root/claude:87:11857)\n    at X (/$bunfs/root/claude:86:5167)\n    at <anonymous> (node:fs:243:13)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-11T17:48:31.680Z"},{"error":"Error: Lock file is already being held\n    at <anonymous> (/$bunfs/root/claude:87:11857)\n    at X (/$bunfs/root/claude:86:5167)\n    at <anonymous> (node:fs:243:13)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-11T18:18:32.652Z"},{"error":"Error: Lock file is already being held\n    at <anonymous> (/$bunfs/root/claude:87:11857)\n    at X (/$bunfs/root/claude:86:5167)\n    at <anonymous> (node:fs:243:13)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-11T18:48:31.901Z"},{"error":"Error: Lock file is already being held\n    at <anonymous> (/$bunfs/root/claude:87:11857)\n    at X (/$bunfs/root/claude:86:5167)\n    at <anonymous> (node:fs:243:13)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-11T19:18:31.949Z"},{"error":"Error: Request was aborted.\n    at _createMessage (/$bunfs/root/claude:232:4515)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-11T19:22:39.180Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at TX (/$bunfs/root/claude:1227:4395)\n    at <anonymous> (/$bunfs/root/claude:1227:4117)\n    at map (native:1:11)\n    at HI (/$bunfs/root/claude:1227:4109)\n    at A3B (/$bunfs/root/claude:1592:2883)\n    at B7 (/$bunfs/root/claude:102:19663)\n    at e3 (/$bunfs/ro

Note: Error logs were truncated.

[github-actions]

Found 3 possible duplicate issues:

1. Image Dimension Exceeds Max Size in Multi-Image API Request #1908
2. Image Upload Size Limit Exceeded in Multi-Image API Request #2923
3. Image Upload Exceeds Size Limit Causing Persistent API Request Failure #2939

This issue will be automatically closed as a duplicate in 3 days.

• If your issue is a duplicate, please close it and 👍 the existing issue instead
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🤖 Generated with Claude Code

[github-actions]

This issue has been automatically closed as a duplicate of #1908.

If this is incorrect, please re-open this issue or create a new one.

🤖 Generated with Claude Code

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.