Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Resource\SelfCheckingResourceChecker' not found in /home/slsparamedicalco/public_html/vendor/symfony/config/Resource/BCResourceInterfaceChecker.php:21 Stack trace: #0 {main} thrown in /home/slsparamedicalco/public_html/vendor/symfony/config/Resource/BCResourceInterfaceChecker.php on line 21