Fatal error: Uncaught Error: Class "PhpSmpp\Pdu\Sm" not found in /home/polishdeid/sites/wilotour.pl/releases/4/vendor/glushkovds/php-smpp/src/Pdu/SubmitSm.php:6 Stack trace: #0 {main} thrown in /home/polishdeid/sites/wilotour.pl/releases/4/vendor/glushkovds/php-smpp/src/Pdu/SubmitSm.php on line 6