Fatal error: Class 'Symfony\Component\Debug\ErrorHandler' not found in /var/www/html/dev/spa/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Debug/ErrorHandler.php on line 24

Call Stack:
    0.0002     229448   1. {main}() /var/www/html/dev/spa/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Debug/ErrorHandler.php:0