Everything is ok in my dev environment on my local machine. However, on my new staging server, I get an error on my registration page only (as far as I can see):
PHP Fatal error: Class 'Symfony\Component\Validator\Constraints\notNull' not found in /var/www/sf-ysu/shared/vendor/symfony/symfony/src/Symfony/Component/Validator/Mapping/Loader/AbstractLoader.php on line 63
I use capifony for deployment, which means my vendor directory is symlinked to another location. This might have something to do with it, but I'm not sure.
Does anyone have clue?