Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Header\AbstractHeader" not found in E:\install\laragon\www\extranet_gpharma_demo\vendor\symfony\mime\Header\UnstructuredHeader.php:19 Stack trace: #0 {main} thrown in E:\install\laragon\www\extranet_gpharma_demo\vendor\symfony\mime\Header\UnstructuredHeader.php on line 19