( ! ) Deprecated: Symfony\Component\HttpKernel\Exception\PreconditionRequiredHttpException::__construct(): Implicitly marking parameter $previous as nullable is deprecated, the explicit nullable type must be used instead in E:\Program_Files\wamp64\www\techtms\vendor\symfony\http-kernel\Exception\PreconditionRequiredHttpException.php on line 26

( ! ) Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Exception\HttpException" not found in E:\Program_Files\wamp64\www\techtms\vendor\symfony\http-kernel\Exception\PreconditionRequiredHttpException.php on line 19
( ! ) Error: Class "Symfony\Component\HttpKernel\Exception\HttpException" not found in E:\Program_Files\wamp64\www\techtms\vendor\symfony\http-kernel\Exception\PreconditionRequiredHttpException.php on line 19
Call Stack
#	Time	Memory	Function	Location
1	0.0016	367680	{main}( )	...\PreconditionRequiredHttpException.php:0