Fatal error: Uncaught exception 'InvalidArgumentException' with message 'Cannot redirect to an empty URL.' in /ghost/201605241537/vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/RedirectResponse.php:41 Stack trace: #0 /ghost/201605241537/src/WBB/CoreBundle/EventListener/KernelExceptionListener.php(46): Symfony\Component\HttpFoundation\RedirectResponse->__construct('', 301) #1 [internal function]: WBB\CoreBundle\EventListener\KernelExceptionListener->onKernelException(Object(Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent), 'kernel.exceptio...', Object(Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher)) #2 /ghost/201605241537/app/cache/prod/classes.php(1755): call_user_func(Array, Object(Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent), 'kernel.exceptio...', Object(Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher)) #3 /ghost/201605241537/app/cache/prod/classes.php(1688): Symfony\Component\EventDispatcher\EventDispatcher->doDispatch(Array, 'kernel.exce in /ghost/201605241537/vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/RedirectResponse.php on line 41