Fatal error: Uncaught Doctrine\ORM\NoResultException: No result was found for query although at least one row was expected. in /var/www/html/axl/vendor/doctrine/orm/lib/Doctrine/ORM/AbstractQuery.php:796 Stack trace: #0 /var/www/html/axl/modules/axl/fstore/model/File.php(78): Doctrine\ORM\AbstractQuery->getSingleResult() #1 /var/www/html/speisekarte.php(14): axl\fstore\model\File::getByNameGroup('speisekarte.pdf', 'speisekarte') #2 {main} thrown in /var/www/html/axl/vendor/doctrine/orm/lib/Doctrine/ORM/AbstractQuery.php on line 796