( ! ) Fatal error: Interface 'Symfony\Component\HttpFoundation\Session\Flash\FlashBagInterface' not found in /var/www/clients/client0/web4/web/vendor/symfony/http-foundation/Session/Flash/FlashBag.php on line 19
Call Stack
#	Time	Memory	Function	Location
1	0.0000	361304	{main}( )	.../FlashBag.php:0