Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\Session\Storage\Handler\AbstractSessionHandler' not found in /home/soh-works/www/websoket-sample/vendor/symfony/http-foundation/Session/Storage/Handler/PdoSessionHandler.php:41
Stack trace:
#0 {main}
thrown in /home/soh-works/www/websoket-sample/vendor/symfony/http-foundation/Session/Storage/Handler/PdoSessionHandler.php on line 41