[Bug] Anthropic API Error: 500 Server Overload

Resolved 💬 28 comments Opened Aug 28, 2025 by relaxis Closed Jan 10, 2026

Bug Description
error 500 overloaded

Environment Info

Platform: linux
Terminal: gnome-terminal
Version: 1.0.94
Feedback ID: e0898bdb-4c9b-4c4e-8c49-338f4cc22856

Errors

[{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at EV (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:1184)\n    at file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:912\n    at Array.map (<anonymous>)\n    at WX (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:903)\n    at dgB (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3169:9325)\n    at MD (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Cc (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:42814)\n    at Q9 (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38355)\n    at _b (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38283)\n    at vD (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38137)","timestamp":"2025-08-28T16:28:33.544Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at EV (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:1184)\n    at file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:912\n    at Array.map (<anonymous>)\n    at WX (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:903)\n    at dgB (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3169:9325)\n    at MD (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Cc (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:42814)\n    at Q9 (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38355)\n    at _b (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38283)\n    at vD (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38137)","timestamp":"2025-08-28T16:28:33.545Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at EV (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:1184)\n    at file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:912\n    at Array.map (<anonymous>)\n    at WX (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:903)\n    at dgB (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3169:9325)\n    at MD (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Cc (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:42814)\n    at Q9 (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38355)\n    at _b (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38283)\n    at vD (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38137)","timestamp":"2025-08-28T16:28:33.545Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at EV (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:1184)\n    at file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:912\n    at Array.map (<anonymous>)\n    at WX (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:903)\n    at dgB (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3169:9325)\n    at MD (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Cc (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:42814)\n    at Q9 (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38355)\n    at _b (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38283)\n    at vD (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38137)","timestamp":"2025-08-28T16:28:33.546Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at EV (file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:1184)\n    at file:///home/alexis/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:912\n    at Array.map (<anonymous>)\n    at WX (file:///home/alexis/.npm-globa

Note: Error logs were truncated.

View original on GitHub ↗

28 Comments

DainoJung · 9 months ago

I faced the same issue, and it was resolved by simply using a different terminal.

kmgroen · 9 months ago

I have the same, different terminal not helping though atm.
API Error: 500 {"type":"error","error":{"type":"api_error","message":"Overloaded"},"r
equest_id":null}

liquid-O2 · 9 months ago

Same here

wabi91 · 9 months ago

Same

Error Message:

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Overloaded"},"request_id":null}

Account Plan:

Login Method: Claude Max Account

dongjinahn · 9 months ago

same here

CKPleiser · 9 months ago

Same here, also with a MAX account:

API Error: 500 
     {"type":"error","error":{"type":"api_error","message":"Overloaded"},"request_id":null}

I tried signing out and signing back in, a new terminal window, or a different terminal.

Daibao1120 · 9 months ago

same here on vscode
API Error: 500 {"type":"error","error":{"type":"api_error","message":"Overloaded"}, "request_id":null}

exag · 9 months ago

same here

maverde73 · 9 months ago

same here, account max
API Error: 500
{"type":"error","error":{"type":"api_error","message":"Overloaded"},"request_id":null}

waqasajk · 9 months ago

same

manoj-mehra-spraxa · 9 months ago

same

CJOgilvie · 9 months ago

same here on multiple instances of vscode
API updated.
Is this a capacity issue with Anthropic?

ivan86to · 9 months ago

same

hoo47 · 9 months ago

same here

Daniel-K-Ivanov · 9 months ago

Opus models are down. Switch to Sonnet only for now - it works

RestorationInnovations · 9 months ago

Opus models are down. Switch to Sonnet only for now - it works

Thanks man. working for me on sonnet.

hflatoey · 9 months ago

Same (Max)

mersx · 9 months ago

I have this issue on MAX account. It's still relevant. Shame on team

aytov · 9 months ago

Same here. wtf?

fabio-bergmann · 9 months ago

Yep, Opus down: https://status.claude.com/

switch /model → Sonnet – that works

Kepners · 9 months ago

I have the same issue. VScode and using Claude desktop app also gives the overloaded notice. Switching to Sonnet does work.

samuelarogbonlo · 9 months ago

How do i switch to sonnet on the claude code cli ? @fabio-bergmann

Kepners · 9 months ago

/model

How do i switch to sonnet on the claude code cli ? @fabio-bergmann

samuvack · 9 months ago

Same: API Error: 500 {"type":"error","error":{"type":"api_error","message":"Overloaded"},"request_id":null}

switch /model → Sonnet – that works

fpr0001 · 8 months ago

same, but for me Sonnet is not working

github-actions[bot] · 7 months ago

This issue has been inactive for 30 days. If the issue is still occurring, please comment to let us know. Otherwise, this issue will be automatically closed in 30 days for housekeeping purposes.

github-actions[bot] · 6 months ago

This issue has been automatically closed due to 60 days of inactivity. If you're still experiencing this issue, please open a new issue with updated information.

github-actions[bot] · 5 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.