Hi,

I have problem when submitting user form. I use FOSUserBundle and there's simple form with only two fields:
->add('name', TextType::class, [ 'label' => 'name and surname', ])
->add('department', TextType::class, [ 'label' => 'department', ])

It's also standard in controller:
$editForm = $this->createForm('Company\AdminBundle\Form\UserEditType', $user);
$editForm->handleRequest($request);

When I submit form in production env I get error in prod.log:
[2018-02-26 08:50:35] request.CRITICAL: Uncaught PHP Exception Symfony\Component\Cache\Exception\InvalidArgumentException: "Cache key "email@address" contains reserved characters {}()/\@:" at /Users/local/Sites/projectname/vendor/symfony/cache/CacheItem.php line 162 {"exception":"[object] (Symfony\\Component\\Cache\\Exception\\InvalidArgumentException(code: 0): Cache key \"email@address\" contains reserved characters {}()/\\@: at /Users/local/Sites/projectname/vendor/symfony/cache/CacheItem.php:162)"} []

As far as I can check, the problem occurs on handleRequest($request) in controller and later on Symfony Form class when dispatches POST_SUBMIT
$dispatcher->dispatch(FormEvents::POST_SUBMIT, $event);
and then in ValidationListener class when running
$violations = $this->validator->validate($form);

I do not use any custom cache bundles / vendors and it's first time I have such problem. Just don't know why. I understand error itself, that there's problem with "@" character in cache and with PSR-6, but have no idea what to check or change.

Thank you for help.