Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Encoder\Base64Encoder" not found in C:\Xampp\www\0050467\ims-mobile\vendor_\symfony\mime\Encoder\Base64ContentEncoder.php:19 Stack trace: #0 {main} thrown in C:\Xampp\www\0050467\ims-mobile\vendor_\symfony\mime\Encoder\Base64ContentEncoder.php on line 19