Validation error

[sylvain-floury]

When I submit an empty project (all fields are empty) an error is return (HTTP 500).
The log error return :

PHP Fatal error:  Call to undefined method Symfony\\Component\\Form\\Form::hasErrors() in /../dime/vendor/phpugl/dime-timetracker-bundle/Dime/TimetrackerBundle/Controller/DimeController.php on line 169