Fatal error: Uncaught Error: Class "Zend\Diactoros\AbstractSerializer" not found in /home/trombino/public_html/africa.trombino.org/vendor_new_3/zendframework/zend-diactoros/src/Response/Serializer.php:21 Stack trace: #0 {main} thrown in /home/trombino/public_html/africa.trombino.org/vendor_new_3/zendframework/zend-diactoros/src/Response/Serializer.php on line 21