Symfony2 Constraints\email not found - validation

Question

I installed a email validator for a newsletter form in Symfony2. Locally everything works fine, but if I upload the whole folder to my webhosting i get the following error message:
Fatal error: Class 'Symfony\Component\Validator\Constraints\email' not found in /home/donacico/public_html/spendu/donaci14/vendor/symfony/symfony/src/Symfony/Component/Validator/Mapping/Loader/AbstractLoader.php on line 64
My validation yml looks like this:
# src/Dbe/DonaciBundle/Resources/config/validation.yml
Dbe\DonaciBundle\Entity\Newsletter:
properties:
email:
- email:
message: The email "{{ value }}" is not a valid email.
checkMX: true
Dbe\DonaciBundle\Entity\Contact:
properties:
email:
- email:
message: The email "{{ value }}" is not a valid email.
checkMX: true
And here is the action of the create controller:
/**
* Creates a new Newsletter entity.
*
*/
public function createAction(Request $request) {
$entity = new Newsletter();
$form = $this -> createCreateForm($entity);
$form -> handleRequest($request);
if ($form -> isValid()) {
$em = $this -> getDoctrine() -> getManager();
$em -> persist($entity);
$em -> flush();
$this -> get('session') -> getFlashBag() -> add('newsletterSubscribed', 'Thank you for subscribing!');
}
return $this -> render('DbeDonaciBundle:UnderConstruction:index.html.twig', array('entity' => $entity, 'form' => $form -> createView(), ));
}
Also in the config.yml file I have validation enabled:
framework:
validation: { enable_annotations: true }
Any idea what could cause this error?

Answer 1

If you work on a linux system its case sensitive.
'Symfony\Component\Validator\Constraints\email'
to
'Symfony\Component\Validator\Constraints\Email'
otherwise the autoloader can't find the file and the class.

Answer 2

It really was a error case of case sensitive, but I corrected the wrong one.
src/DbeDonaciBundle/Resources/config/validation.yml
Dbe\DonaciBundle\Entity\Newsletter:
properties:
email:
- Email :
message: The email "{{ value }}" is not a valid email.
checkMX: true