[Bug] Connection Failure: 503 Error Preventing CLI Startup

Bug Description
I'm not able to use claude code at all. I keep getting "503 upstream connect error or disconnect/reset before headers. reset reason: remote connection failure, transport failure reason: delayed connect error: Connection refused"

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.0.5
• Feedback ID: eccc601a-53b6-4b40-94bb-716261968516

Errors

[{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at QK (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1741:1183)\n    at file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1741:911\n    at Array.map (<anonymous>)\n    at xX (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1741:902)\n    at cJB (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2847:9380)\n    at CC (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:34:19415)\n    at Fp (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:42814)\n    at I9 (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:38355)\n    at Ch (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:38283)\n    at TC (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:38137)","timestamp":"2025-10-03T02:56:19.049Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at QK (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1741:1183)\n    at file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1741:911\n    at Array.map (<anonymous>)\n    at xX (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1741:902)\n    at cJB (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2847:9380)\n    at CC (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:34:19415)\n    at Fp (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:42814)\n    at I9 (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:38355)\n    at Ch (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:38283)\n    at TC (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:38137)","timestamp":"2025-10-03T02:56:19.054Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at QK (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1741:1183)\n    at file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1741:911\n    at Array.map (<anonymous>)\n    at xX (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1741:902)\n    at cJB (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2847:9380)\n    at CC (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:34:19415)\n    at Fp (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:42814)\n    at I9 (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:38355)\n    at Ch (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:38283)\n    at TC (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:38137)","timestamp":"2025-10-03T02:56:19.059Z"},{"error":"Error: Request was aborted.\n    at AbortSignal.Y (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1120:26895)\n    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:827:20)\n    at AbortSignal.dispatchEvent (node:internal/event_target:762:26)\n    at runAbort (node:internal/abort_controller:486:10)\n    at abortSignal (node:internal/abort_controller:457:3)\n    at AbortController.abort (node:internal/abort_controller:505:5)\n    at wA (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:3215:49266)\n    at file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:3213:3004\n    at file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:806:1001\n    at A.Q.batchedUpdates (file:///Users/carlosmonti/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:36:51080)","timestamp":"2025-10-03T02:57:00.162Z"}]