Fatal error: Class 'Symfony\Component\HttpKernel\Exception\HttpException' not found in /var/www/html/dev/spa/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Exception/PreconditionRequiredHttpException.php on line 21

Call Stack:
    0.0003     233768   1. {main}() /var/www/html/dev/spa/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Exception/PreconditionRequiredHttpException.php:0