Fatal error: Uncaught Error: Interface "Symfony\Component\Mime\Encoder\EncoderInterface" not found in D:\Apache24\www\api.print.nxytec.cn\back\vendor\symfony\mime\Encoder\QpEncoder.php:19 Stack trace: #0 {main} thrown in D:\Apache24\www\api.print.nxytec.cn\back\vendor\symfony\mime\Encoder\QpEncoder.php on line 19