( ! ) Fatal error: Interface 'Symfony\Component\HttpFoundation\Session\Flash\FlashBagInterface' not found in /var/www/exam_ITR_dev/vendor/symfony/http-foundation/Session/Flash/AutoExpireFlashBag.php on line 19
Call Stack
#	Time	Memory	Function	Location
1	0.0007	412344	{main}( )	.../AutoExpireFlashBag.php:0