[Bug] Anthropic API Error: 500 Internal Server Error with Claude 3 Opus model
Status Fixed / completed
Reported on v2.1.22
Maintainer reply None cached
Activity 6 comments · opened Jan 28, 2026 · closed Jan 29, 2026
Bug Description
It's seems that opus do not work on claude code last version. I still have an 500 error. but issing sonet seems to work.
Environment Info
- Platform: darwin
- Terminal: WarpTerminal
- Version: 2.1.22
- Feedback ID: 2672328a-16ff-4627-9196-8b03b94e3e6b
Errors
[{"error":"Error: ENOENT: no such file or directory, scandir '/Library/Application Support/ClaudeCode/.claude/skills'\n at readdirSync (unknown)\n at <anonymous> (/$bunfs/root/claude:12:2063)\n at rW (/$bunfs/root/claude:11:35454)\n at readdirSync (/$bunfs/root/claude:12:2024)\n at DQR (/$bunfs/root/claude:1758:380)\n at DQR (/$bunfs/root/claude:1758:1350)\n at <anonymous> (/$bunfs/root/claude:1758:4670)\n at <anonymous> (/$bunfs/root/claude:1758:5401)\n at A (/$bunfs/root/claude:11:7259)\n at mb8 (/$bunfs/root/claude:4820:4342)","timestamp":"2026-01-28T11:24:11.895Z"},{"error":"Error: ENOENT: no such file or directory, scandir '/Users/alexandregounin/.claude/skills'\n at readdirSync (unknown)\n at <anonymous> (/$bunfs/root/claude:12:2063)\n at rW (/$bunfs/root/claude:11:35454)\n at readdirSync (/$bunfs/root/claude:12:2024)\n at DQR (/$bunfs/root/claude:1758:380)\n at DQR (/$bunfs/root/claude:1758:1350)\n at <anonymous> (/$bunfs/root/claude:1758:4713)\n at <anonymous> (/$bunfs/root/claude:1758:5401)\n at A (/$bunfs/root/claude:11:7259)\n at mb8 (/$bunfs/root/claude:4820:4342)","timestamp":"2026-01-28T11:24:11.895Z"},{"error":"Error: 500 {\"type\":\"error\",\"error\":{\"type\":\"api_error\",\"message\":\"Internal server error\"},\"request_id\":\"req_011CXZh5XWJbCVLovUhaDbf1\"}\n at generate (/$bunfs/root/claude:145:37875)\n at makeRequest (/$bunfs/root/claude:162:5435)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T11:24:23.056Z"},{"error":"Error: 500 {\"type\":\"error\",\"error\":{\"type\":\"api_error\",\"message\":\"Internal server error\"},\"request_id\":\"req_011CXZhBTdJZ2e7jRXGH2TPV\"}\n at generate (/$bunfs/root/claude:145:37875)\n at makeRequest (/$bunfs/root/claude:162:5435)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T11:25:43.499Z"}]
6 Comments
Confirmed. In OpusPlan mode, this happens. Switching to sonnet or explicitly asking CC to use sonnet works as normal and does not have the below error.
Claude code chat history:
Let me try again.
EnterPlanMode
OUT
Entered plan mode. You should now focus on exploring the codebase and designing an implementation approach.
In plan mode, you should:
Remember: DO NOT write or edit any files yet. This is a read-only exploration and planning phase.
API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011CXZhWdRCedybmBn54wRVv"}
Found 3 possible duplicate issues:
This issue will be automatically closed as a duplicate in 3 days.
🤖 Generated with Claude Code
Please check https://status.claude.com/
(I'm pretty sure we'll see something there soon.)
I'm having the same problem. Get a coffee, open the window, check back later. ;-) I'm pretty sure that this isn't meant to be a real-time support channel.
Thank you for your answer !
CC ask me to open a tickets ahahah
It was resolved a few hour after my tickets.
Have a nice day
API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":....
Sonnet 5?
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