Error2 reports
Fix BlockUnknownError
in AutoGPT
✅ Solution
The "BlockUnknownError" during LLM calls, especially with a 401 error code, usually indicates an authentication problem, most commonly an incorrect or missing API key. To resolve this, verify that the correct API key is set as an environment variable (e.g., OPENAI_API_KEY) and that Auto-GPT is configured to access it properly; double-check for typos and ensure the key has not expired.
Related Issues
Real GitHub issues where developers encountered this error:
BlockUnknownError: raised by AITextGeneratorBlock with message: Error calling LLM: Error code: 401 - {'error': {'message': 'Incorrect API key provided: sk-ant-a****************************************Feb 27, 2026
BlockUnknownError: raised by AIStructuredResponseGeneratorBlock with message: Error calling LLM: Error code: 401 - {'error': {'message': 'Incorrect API key provided: sk-ant-a**************************Feb 27, 2026
Timeline
First reported:Feb 27, 2026
Last reported:Feb 27, 2026