sqlalchemy.exc.InvalidRequestError: This Session's transaction has been rolled back due to a previous exception during flush. To begin a new transaction with this Session, first issue Session.rollback(). Original exception was: (mysql.connector.errors.DataError) 1406 (22001): Data too long for column 'title' at row 1 [SQL: 'INSERT INTO post (title, body, date_created, user_id) VALUES (%(title)s, %(body)s, %(date_created)s, %(user_id)s)'] [parameters: {'title': b'MASSIVEPOSTTESTMASSIVEPOSTTESTMASSIVEPOSTTESTMASSIVEPOSTTEST', 'body': b'MASSIVEPOSTTESTMASSIVEPOSTTESTMASSIVEPOSTTESTMASSIVEPOSTT…