Fatal error: Uncaught Error: Interface 'Symfony\Component\Debug\FatalErrorHandler\FatalErrorHandlerInterface' not found in /home1/heyerarc/public_html/updates/concrete5-8.5.5_remote_updater/concrete/vendor/symfony/debug/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php:22 Stack trace: #0 {main} thrown in /home1/heyerarc/public_html/updates/concrete5-8.5.5_remote_updater/concrete/vendor/symfony/debug/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php on line 22