Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Encoder\QpEncoder" not found in C:\PHP\APPS\dev\aictec_license_web\vendor\symfony\mime\Encoder\QpMimeHeaderEncoder.php:17 Stack trace: #0 {main} thrown in C:\PHP\APPS\dev\aictec_license_web\vendor\symfony\mime\Encoder\QpMimeHeaderEncoder.php on line 17