Common questions and error troubleshooting guide for API usage. If you encounter any of the following errors, please refer to the corresponding solutions.
502 Upstream service temporarily unavailable
Unable to connect API (UND_ERR_SOCKET) 或 (ECONNRESET)
Unable to connect API (EAI_AGAIN)
503 Service Unavailable 或 503 No available accounts
429 Upstream rate limit exceeded, please retry later
401 API key is required in Authorization header...
403 API Key is not assigned to any group and cannot be used.
429 API key daily quota exhausted
503 No available accounts: this group only allows Claude Code clients
503 error when using CCSwitch