Fatal error: Uncaught Error: Class "Zend\Diactoros\AbstractSerializer" not found in /home/hagi/public_html/virtual/vendor/zendframework/zend-diactoros/src/Request/Serializer.php:30 Stack trace: #0 {main} thrown in /home/hagi/public_html/virtual/vendor/zendframework/zend-diactoros/src/Request/Serializer.php on line 30