invalid_message

A WebSocket frame is not a valid message (sent as an error frame, not an HTTP status).

WebSocket error frame.

Likely cause: Not JSON, not an object, an unknown type, or a bad field.

What to do: Fix the frame; the message names the field.

Retry: No. The same request gets the same answer; change something first.

Listed under Streaming in Errors. Send the error’s requestId to support and we can find the request.