Hello I am hitting the following error when i run the nova-manage command. I need help.

2014-08-18 17:09:10 DEBUG nova.utils [-] backend <module 'nova.db.sqlalchemy.migration' from '/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/migration.pyc'> from (pid=7943) __get_backend /usr/lib/python2.7/dist-packages/nova/utils.py:663
2014-08-18 17:09:10 WARNING nova.utils [-] /usr/lib/python2.7/dist-packages/sqlalchemy/pool.py:639: SADeprecationWarning: The 'listeners' argument to Pool (and create_engine()) is deprecated.  Use event.listen().
  Pool.__init__(self, creator, **kw)

2014-08-18 17:09:10 WARNING nova.utils [-] /usr/lib/python2.7/dist-packages/sqlalchemy/pool.py:145: SADeprecationWarning: Pool.add_listener is deprecated.  Use event.listen()
  self.add_listener(l)