SQLSTATE[28000] [1045] Access denied for user 'root'@'localhost' (using password: NO)

Question

I´m working with symfony 2.1.2, FOSuserBundle, SonataAdminBundle, SonataUserBundle and SonataMediaBundle. The problem is that I cannot access to my database and get this err

Answer 1

For all who have this problem, just try to clear the cache:

php bin/console cache:clear