and i get this error via travis email when i commit sth: 

The build has errored.
Repository	adriancdperu/maggie-server
Build #13	https://travis-ci.org/adriancdperu/maggie-server/builds/10001431
Changeset	https://github.com/adriancdperu/maggie-server/compare/a87d9e7a4fed^...86e8e65a3c92
 
Commit	86e8e65 (feature/mysql_tables)
Message	A sample of User registration table using cascade
Author	adib007
Duration	6 minutes and 32 seconds