Return type array of method Surfnet\StepupRa\RaBundle\Security\AuthenticatedIdentity::eraseCredentials() is not covariant with return type void of method Symfony\Component\Security\Core\User\UserInterface::eraseCredentials().

Method Surfnet\StepupRa\RaBundle\Security\AuthenticatedIdentity::getUserIdentifier() should return non-empty-string but returns string.

Cannot call method notice() on Psr\Log\LoggerInterface|null.

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