Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Header\AbstractHeader" not found in D:\NTG_App\www\TIL_Production_Monitoring\vendor\symfony\mime\Header\PathHeader.php:22 Stack trace: #0 {main} thrown in D:\NTG_App\www\TIL_Production_Monitoring\vendor\symfony\mime\Header\PathHeader.php on line 22