Fatal error: Uncaught Error: Interface "Symfony\Component\String\Exception\ExceptionInterface" not found in /home/slsiluser/public_html/service-portal-mobile-responsive/vendor/symfony/string/Exception/InvalidArgumentException.php:14 Stack trace: #0 {main} thrown in /home/slsiluser/public_html/service-portal-mobile-responsive/vendor/symfony/string/Exception/InvalidArgumentException.php on line 14