Fatal error: Interface 'Symfony\Component\EventDispatcher\EventDispatcherInterface' not found in /var/www/html/dev/spa/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php on line 32

Call Stack:
    0.0015     325376   1. {main}() /var/www/html/dev/spa/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php:0