Error listings
Fix Vercel serverless function timing out at the default 10-second limit on the free Hobby plan; need config changes or workarounds for longer-running functions. Includes evidence for Vercel troubleshooting demand.
FUNCTION_INVOCATION_TIMEOUT: request reached timeout threshold (10s on Hobby plan without Fluid Compute) Fix Claude Code MCP tool call hanging indefinitely after server-side SSE stream drops due to network timeouts or container restarts Includes evidence for Claude Code troubleshooting demand.
SSE connection dropped after N seconds uptime; Tool 'X' still running (30s elapsed) ... [onCancel] source=local; McpError: MCP error -32001: user-cancel Fix Claude Code parallel batch tool execution error where AskUserQuestion permission dialog fails because the permission stream closes before user receives response Includes evidence for Claude Code troubleshooting demand.
Tool permission stream closed before response received Fix GitHub MCP authentication failure on Claude Code web caused by Copilot entitlement check failing, resulting in 403 and misleading OAuth redirect to Google Drive Includes evidence for Claude Code troubleshooting demand.
Streamable HTTP error: Error POSTing to endpoint: unauthorized: not authorized to use this Copilot feature (code: 403) Fix HTTP transport MCP server registration regression in Claude Code v2.1.142 causing silent startup without any connection attempt Includes evidence for Claude Code troubleshooting demand.
[MCP] --mcp-config servers running fully async (nonblocking) but no connection to the MCP URL is ever attempted. No error is logged. Tools never appear. Fix Vercel deployment failing because vite build command not found during CI build step on pushed changes Includes evidence for Vercel troubleshooting demand.
Build Failed Command "vite build" exited with 127 Fix perpetual freezing during Cowork OAuth authentication flow in Claude Desktop app, blocking collaborative coding sessions Includes evidence for Claude Code troubleshooting demand.
Claude Desktop Cowork freezes at "Authenticating" — LocalAgentModeSessions OAuth exchange never completes Fix silent OAuth scope drop causing Remote Control feature to break permanently for paid Max subscribers, preventing API key generation Includes evidence for Claude Code troubleshooting demand.
org:create_api_key scope silently dropped from OAuth grant — Remote Control permanently broken on Max subscription Fix inconsistent error mapping for background response failures in OpenAI Python SDK, preventing proper exception handling and retry logic Includes evidence for OpenAI API troubleshooting demand.
Background responses failures lack a stable code/name that maps to an exception class Fix Chrome crash in Claude Code MCP operations when interacting with SharePoint Online, affecting enterprise Microsoft 365 deployments Includes evidence for Claude Code troubleshooting demand.
Chrome crashes on any page-interacting MCP op (navigate / get_page_text) against a SharePoint Online tenant Investigate and fix Codex App pre-emptively consuming rate limits before user submits prompts, unfairly blocking subsequent legitimate requests Includes evidence for OpenAI API troubleshooting demand.
Codex App consumes rate limit on startup without any user action Fix 429 rate limit error handling in OpenAI Codex app when hitting response endpoint DDoS-rate limits, distinguishing between usage quotas and request frequency caps Includes evidence for OpenAI API troubleshooting demand.
exceeded retry limit, last status: 429 Too Many Requests, request id: 9f9fe320aa92b10b-FRA Fix Claude Code hooks system breaking when rate limits are hit mid-session or when hooks.json is edited dynamically, stopping all further hook processing until restart Includes evidence for OpenAI API troubleshooting demand.
Hooks stop firing after rate-limit stops or live hooks.json edits Fix overly aggressive retry policy in LLM middleware that causes repeated 429 errors when exceeding provider rate limits, because max backoff duration is shorter than provider's rate limit window Includes evidence for LiteLLM troubleshooting demand.
LLM retry policy too aggressive for provider rate-limit (429) windows — Gemini quota windows exceed max backoff Fix Slack MCP OAuth integration in Claude Code where accessToken is stored as empty string despite successful OAuth completion, blocking authenticated Slack usage Includes evidence for Claude Code troubleshooting demand.
OAuth stores empty accessToken after completing flow; complete_authentication also broken Fix Claude Code 401 authentication error when OAuth token expires during an autonomous coding run, making session unrecoverable without re-auth Includes evidence for Claude Code troubleshooting demand.
authentication_error (HTTP 401 OAuth token expired mid-session) Fix Claude Code 503 errors caused by corporate proxies, ZTNA agents, or VPNs blocking Anthropic API requests from reaching the cloud endpoint Includes evidence for Claude Code troubleshooting demand.
HTTP 503 — Anthropic backend unreachable on route (Cloudflare edge or regional gateway error) Fix Claude Code 529 overloaded error when Anthropic API capacity is saturated during peak hours on Opus or Max plan Includes evidence for Claude Code troubleshooting demand.
API Error: 529 {"type":"overloaded_error"} Fix Cursor IDE 'MCP Connection Failed' error caused by zombie MCP server process holding port 3001, preventing new MCP server from starting Includes evidence for Cursor troubleshooting demand.
Error: MCP Connection Failed — Unable to establish a connection to the MCP server Fix GitHub Copilot CLI authorization errors after token expiration, revocation, or SSO re-authentication — especially common in enterprise environments Includes evidence for GitHub Copilot troubleshooting demand.
User not authorized (token expired or revoked in Copilot CLI)