Additional properties are not allowed ('execution_count', 'metadata' were unexpected) Failed validating 'additionalProperties' in stream: On instance['cells'][10]['outputs'][0]: {'execution_count': 4, 'metadata': {}, 'output_type': 'stream', 'text': '\x1b[1;32mclass\x1b[0m ' '\x1b[0mTicTacToe\x1b[0m\x1b[1;33m(\x1b[0m\x1b[0mGame\x1b[0m\x1b[1;33...'}
Read the FAQ for more information.