Fatal error: Uncaught Doctrine\ORM\ORMException: The identifier id is missing for a query of Model\Exhibit in /var/www/vendor/doctrine/orm/lib/Doctrine/ORM/ORMException.php:310 Stack trace: #0 /var/www/vendor/doctrine/orm/lib/Doctrine/ORM/EntityManager.php(433): Doctrine\ORM\ORMException::missingIdentifierField('Model\\Exhibit', 'id') #1 /var/www/vendor/doctrine/orm/lib/Doctrine/ORM/EntityRepository.php(190): Doctrine\ORM\EntityManager->find('Model\\Exhibit', Array, NULL, NULL) #2 /var/www/src/website/Controller/Immobilien.php(75): Doctrine\ORM\EntityRepository->find(NULL) #3 /var/www/vendor/nextcontrol/core/src/Middleware/ResolverMiddleware.php(34): Website\Controller\Immobilien->detail(Object(Zend\Diactoros\ServerRequest)) #4 /var/www/vendor/nextcontrol/middleware/src/Frame.php(32): Next\Core\Middleware\ResolverMiddleware->process(Object(Zend\Diactoros\ServerRequest), Object(Next\Middleware\Frame)) #5 /var/www/src/website/Middleware/AuthMiddleware.php(40): Next\Middleware\Frame->next(Object(Zend\Diactoros\ServerRequest) in /var/www/vendor/doctrine/orm/lib/Doctrine/ORM/ORMException.php on line 310