[Bug] Anthropic API Error: Internal Server Error (500)

Status Fixed / completed
Maintainer reply ✓ Yes — ashwin-ant
Activity 9 comments · opened Nov 24, 2025 · closed Nov 24, 2025
💡 Likely answer: A maintainer (ashwin-ant, collaborator) responded on this thread — see the highlighted reply below.

Bug Description
 API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server
error"},"request_id":"req_011CVSzzd5u4VkQ94vmx5X6u"}

Environment Info

  • Platform: darwin
  • Terminal: Apple_Terminal
  • Version: 2.0.50
  • Feedback ID: 061e8ae5-0fb7-403d-90c3-8a3304735f8f

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/singyu/.local/share/claude/versions/2.0.50 (expected in multi-process scenarios)\n    at JL0 (/$bunfs/root/claude:2641:1622)\n    at b_A (/$bunfs/root/claude:2639:12709)\n    at async pA7 (/$bunfs/root/claude:2639:13911)\n    at async Ex (/$bunfs/root/claude:2641:236)\n    at async <anonymous> (/$bunfs/root/claude:2641:12469)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-24T03:52:41.099Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/singyu/.local/share/claude/versions/2.0.50 (expected in multi-process scenarios)\n    at JL0 (/$bunfs/root/claude:2641:1622)\n    at b_A (/$bunfs/root/claude:2639:12709)\n    at async pA7 (unknown)\n    at async Ex (unknown)\n    at unknown\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-24T03:52:53.968Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/singyu/.local/share/claude/versions/2.0.50 (expected in multi-process scenarios)\n    at JL0 (/$bunfs/root/claude:2641:1622)\n    at b_A (/$bunfs/root/claude:2639:12709)\n    at async pA7 (/$bunfs/root/claude:2639:13911)\n    at async Ex (/$bunfs/root/claude:2641:236)\n    at async <anonymous> (/$bunfs/root/claude:2641:12469)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-24T03:53:24.980Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/singyu/.local/share/claude/versions/2.0.50 (expected in multi-process scenarios)\n    at JL0 (/$bunfs/root/claude:2641:1622)\n    at b_A (/$bunfs/root/claude:2639:12709)\n    at async pA7 (/$bunfs/root/claude:2639:13911)\n    at async Ex (/$bunfs/root/claude:2641:236)\n    at async <anonymous> (/$bunfs/root/claude:2641:12469)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-24T03:54:04.870Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/singyu/.local/share/claude/versions/2.0.50 (expected in multi-process scenarios)\n    at JL0 (/$bunfs/root/claude:2641:1622)\n    at b_A (/$bunfs/root/claude:2639:12709)\n    at async pA7 (/$bunfs/root/claude:2639:13911)\n    at async Ex (/$bunfs/root/claude:2641:236)\n    at async <anonymous> (/$bunfs/root/claude:2641:12469)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-24T04:24:05.257Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/singyu/.local/share/claude/versions/2.0.50 (expected in multi-process scenarios)\n    at JL0 (/$bunfs/root/claude:2641:1622)\n    at b_A (/$bunfs/root/claude:2639:12709)\n    at async pA7 (/$bunfs/root/claude:2639:13911)\n    at async Ex (/$bunfs/root/claude:2641:236)\n    at async <anonymous> (/$bunfs/root/claude:2641:12469)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-24T04:54:05.368Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/singyu/.local/share/claude/versions/2.0.50 (expected in multi-process scenarios)\n    at JL0 (/$bunfs/root/claude:2641:1622)\n    at b_A (/$bunfs/root/claude:2639:12709)\n    at async pA7 (/$bunfs/root/claude:2639:13911)\n    at async Ex (/$bunfs/root/claude:2641:236)\n    at async <anonymous> (/$bunfs/root/claude:2641:12469)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-24T05:24:05.279Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/singyu/.local/share/claude/versions/2.0.50 (expected in multi-process scenarios)\n    at JL0 (/$bunfs/root/claude:2641:1622)\n    at b_A (/$bunfs/root/claude:2639:12709)\n    at async pA7 (/$bunfs/root/claude:2639:13911)\n    at async Ex (/$bunfs/root/claude:2641:236)\n    at async <anonymous> (/$bunfs/root/claude:2641:12469)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-24T05:54:05.214Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/singyu/.local/share/claude/versions/2.0.50 (expected in multi-process scenarios)\n    at JL0 (/$bunfs/root/claude:2641:1622)\n    at b_A (/$bunfs/root/claude:2639:12709)\n    at async pA7 (/$bunfs/root/claude:2639:13911)\n    at async Ex (/$bunfs/root/claude:2641:236)\n    at async <anonymous> (/$bunfs/root/claude:2641:12469)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-24T06:24:05.165Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/singyu/.local/share/claude/versions/2.0.50 (expected in multi-process scenarios)\n    at JL0 (/$bunfs/root/claude:2641:1622)\n    at b_A (/$bunfs/r

Note: Error logs were truncated.

View original on GitHub ↗

9 Comments

AlessioZanghi · 9 months ago

me too

uladzk · 9 months ago

+1

edit:
tried running on resuming the context and on the fresh session, no luck:

<img width="744" height="46" alt="Image" src="https://github.com/user-attachments/assets/28de2e6d-2a0b-499c-8b9b-450fe541418c" />

platform: Mac 26.1
terminal: iTerm 3.6.6
claude code version: 2.0.50 (latest)

bl-ue · 9 months ago

Same, for me and team. It's now completely down.

<img width="1581" height="667" alt="Image" src="https://github.com/user-attachments/assets/a95e86a1-c1c7-4517-8821-4f1f6e8a5ea8" />

robsoncombr · 9 months ago

+1 it is down, platform independent

$ claude update
Current version: 2.0.50
Checking for updates...
Claude Code is up to date (2.0.50)

<img width="925" height="138" alt="Image" src="https://github.com/user-attachments/assets/ed031ea8-4c14-46ee-b45a-3b5fb91ed727" />

bl-ue · 9 months ago

It's working for me now! 🎉

<img width="571" height="779" alt="Image" src="https://github.com/user-attachments/assets/120ff1ec-d073-47c0-9cf9-e172a53bed1f" />

ashwin-ant collaborator · 9 months ago

Can others confirm that the issue is resolved for them? We believe we've resolved the issue, but want to confirm.

ithomaslin · 9 months ago

It's now back online for me.

rambah · 9 months ago

It's back again, please fix this. I'm paying 200 USD per month...

github-actions[bot] · 9 months ago

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.