AssemblyAI Common Errors Overview Quick reference for the most common AssemblyAI errors across transcription, streaming, and LeMUR APIs with real error messages and solutions. Prerequisites - package installed - API key configured - Access to application logs or console Instructions Error 1: Authentication Failed Cause: API key is missing, invalid, or revoked. Solution: --- Error 2: Transcription Status Error Cause: The URL is not publicly accessible, has expired, or returned non-audio content. Solution: --- Error 3: Could Not Process Audio Cause: Corrupted file, unsupported codec, file too s…