[Bug] Anthropic API Error: Internal Server Error (500)
Resolved 💬 17 comments Opened Nov 25, 2025 by budivoogt Closed Nov 25, 2025
💡 Likely answer: A maintainer (ashwin-ant, collaborator)
responded on this thread — see the highlighted reply below.
Bug Description
getting 500 error API Error: 500 {"type":"error","error":{"typ
e":"api_error","message":"Internal server
error"},"request_id":null}
Environment Info
- Platform: darwin
- Terminal: vscode
- Version: 2.0.53
- Feedback ID: f9d95f2c-9705-423b-9325-9ec437d05996
Errors
[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/budi_daily/.local/share/claude/versions/2.0.53 (expected in multi-process scenarios)\n at nL0 (/$bunfs/root/claude:2656:1622)\n at F6A (/$bunfs/root/claude:2656:1300)\n at processTicksAndRejections (native:7:39)","timestamp":"2025-11-25T20:31:44.798Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/budi_daily/.local/share/claude/versions/2.0.53 (expected in multi-process scenarios)\n at nL0 (/$bunfs/root/claude:2656:1622)\n at E6A (/$bunfs/root/claude:2654:12709)\n at async p97 (/$bunfs/root/claude:2654:13911)\n at async Zx (/$bunfs/root/claude:2656:236)\n at async <anonymous> (/$bunfs/root/claude:2656:12469)\n at processTicksAndRejections (native:7:39)","timestamp":"2025-11-25T20:31:53.211Z"},{"error":"Error: EISDIR: illegal operation on a directory, read\n at readFileSync (unknown)\n at readFileSync (/$bunfs/root/claude:12:370)\n at $rB (/$bunfs/root/claude:4243:16975)\n at call (/$bunfs/root/claude:1459:912)\n at call (/$bunfs/root/claude:1455:5768)\n at lt8 (/$bunfs/root/claude:2164:20837)\n at processTicksAndRejections (native:7:39)","timestamp":"2025-11-25T20:32:16.339Z"},{"error":"ZodError\n at error (/$bunfs/root/claude:77:18464)\n at parse (/$bunfs/root/claude:77:11726)\n at GC7 (/$bunfs/root/claude:4025:4752)\n at async <anonymous> (/$bunfs/root/claude:4025:6267)\n at processTicksAndRejections (native:7:39)","timestamp":"2025-11-25T20:37:39.810Z"},{"error":"Error: Request was aborted.\n at H (/$bunfs/root/claude:2026:1477)\n at abort (unknown)\n at R_ (/$bunfs/root/claude:2748:64249)\n at <anonymous> (/$bunfs/root/claude:2737:3633)\n at <anonymous> (/$bunfs/root/claude:832:645)\n at <anonymous> (/$bunfs/root/claude:717:51118)\n at G (/$bunfs/root/claude:832:638)\n at emit (/$bunfs/root/claude:824:1505)\n at processInput (/$bunfs/root/claude:831:740)\n at flushIncomplete (/$bunfs/root/claude:831:564)","timestamp":"2025-11-25T20:43:34.460Z"},{"error":"Error: 500 {\"type\":\"error\",\"error\":{\"type\":\"api_error\",\"message\":\"Internal server error\"},\"request_id\":null}\n at generate (/$bunfs/root/claude:415:9679)\n at makeRequest (/$bunfs/root/claude:1262:5434)\n at processTicksAndRejections (native:7:39)","timestamp":"2025-11-25T20:43:41.361Z"},{"error":"Error: 500 {\"type\":\"error\",\"error\":{\"type\":\"api_error\",\"message\":\"Internal server error\"},\"request_id\":null}\n at generate (/$bunfs/root/claude:415:9679)\n at makeRequest (/$bunfs/root/claude:1262:5434)\n at processTicksAndRejections (native:7:39)","timestamp":"2025-11-25T20:43:48.776Z"}]
17 Comments
I'm having overloaded errors.
<img width="2559" height="578" alt="Image" src="https://github.com/user-attachments/assets/fdd28228-f8e1-4766-9778-ed48456ad33d" />
<img width="1044" height="108" alt="Image" src="https://github.com/user-attachments/assets/82acd3b7-ab03-4c0a-9eb9-289fad87ed7b" />
I am also experiencing this.
I'm having error 529:
not experiencing this, skill issue?
API Error: 529 {"type":"error","error":{"type":"overloaded_error","message":"Overloaded"},"request_id":null}+1Found 3 possible duplicate issues:
This issue will be automatically closed as a duplicate in 3 days.
🤖 Generated with Claude Code
wen fix
oki its working for me again
cya next gh issue nerds <3
Set model to sonnet (claude-sonnet-4-5-20250929)- this solve my problem.Without Claude I have to think. This is cruelty.
We're investigating: https://status.claude.com/incidents/5g213mxxlbsw
<img width="1183" height="230" alt="Image" src="https://github.com/user-attachments/assets/60dd952d-8a74-4188-8161-fb78fe4534e3" />
This typically happens during a complex task, right before an "auto-compaction" occurs
529 {"type":"error","error":{"type":"overloaded_error","message":"Overloaded"},"request_id":null}
<img width="768" height="99" alt="Image" src="https://github.com/user-attachments/assets/acdc371c-a29a-42ea-a6d0-c28f63c60dfe" />
Seems to work again
<img width="1204" height="140" alt="Image" src="https://github.com/user-attachments/assets/a5aa8c9f-0b91-491f-941b-cb866522215d" />
It's happening to me at 56% usage, not close to compaction at all (only for opus; sonnet is fine)
This is now resolved.
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.