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Code: chat_provider_unknown_error HTTP status: 502 Type: server_error

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When it fires

The upstream chat model returned an error that the platform’s error-mapping table doesn’t yet recognize. Logged at ERROR so engineering can add the mapping in the next release. Any held credits are released.

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How to recover

Retry with exponential backoff — the failure is treated as transient until classified. If the error keeps recurring on the same request shape, open a support ticket with the request_id so we can capture the upstream signal and pin the mapping.