Fatal error: Uncaught Error: Class 'Zend\Validator\Exception\InvalidArgumentException' not found in /home/app/htdocs/ninja/vendor/zendframework/zend-validator/src/Exception/InvalidMagicMimeFileException.php:12 Stack trace: #0 {main} thrown in /home/app/htdocs/ninja/vendor/zendframework/zend-validator/src/Exception/InvalidMagicMimeFileException.php on line 12