( ! ) Deprecated: Symfony\Component\Serializer\Encoder\JsonEncoder::__construct(): Implicitly marking parameter $encodingImpl as nullable is deprecated, the explicit nullable type must be used instead in E:\Program_Files\wamp64\www\print\vendor\symfony\serializer\Encoder\JsonEncoder.php on line 26

( ! ) Deprecated: Symfony\Component\Serializer\Encoder\JsonEncoder::__construct(): Implicitly marking parameter $decodingImpl as nullable is deprecated, the explicit nullable type must be used instead in E:\Program_Files\wamp64\www\print\vendor\symfony\serializer\Encoder\JsonEncoder.php on line 26

( ! ) Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Encoder\EncoderInterface" not found in E:\Program_Files\wamp64\www\print\vendor\symfony\serializer\Encoder\JsonEncoder.php on line 19
( ! ) Error: Interface "Symfony\Component\Serializer\Encoder\EncoderInterface" not found in E:\Program_Files\wamp64\www\print\vendor\symfony\serializer\Encoder\JsonEncoder.php on line 19
Call Stack
#	Time	Memory	Function	Location
1	0.0191	372536	{main}( )	...\JsonEncoder.php:0