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