( ! ) Deprecated: Symfony\Component\Serializer\Normalizer\AbstractNormalizer::__construct(): Implicitly marking parameter $classMetadataFactory as nullable is deprecated, the explicit nullable type must be used instead in E:\Program_Files\wamp64\www\print\vendor\symfony\serializer\Normalizer\AbstractNormalizer.php on line 165

( ! ) Deprecated: Symfony\Component\Serializer\Normalizer\AbstractNormalizer::__construct(): Implicitly marking parameter $nameConverter as nullable is deprecated, the explicit nullable type must be used instead in E:\Program_Files\wamp64\www\print\vendor\symfony\serializer\Normalizer\AbstractNormalizer.php on line 165

( ! ) Deprecated: Symfony\Component\Serializer\Normalizer\AbstractNormalizer::instantiateObject(): Implicitly marking parameter $format as nullable is deprecated, the explicit nullable type must be used instead in E:\Program_Files\wamp64\www\print\vendor\symfony\serializer\Normalizer\AbstractNormalizer.php on line 447

( ! ) Fatal error: Trait "Symfony\Component\Serializer\Normalizer\ObjectToPopulateTrait" not found in E:\Program_Files\wamp64\www\print\vendor\symfony\serializer\Normalizer\AbstractNormalizer.php on line 30
Call Stack
#	Time	Memory	Function	Location
1	0.0231	457352	{main}( )	...\AbstractNormalizer.php:0