Fatal error: Uncaught Error: Class "PhpSmpp\Pdu\Sm" not found in /home/polishdeid/sites/wilotour.pl/releases/8/vendor/glushkovds/php-smpp/src/Pdu/Ussd.php:5 Stack trace: #0 {main} thrown in /home/polishdeid/sites/wilotour.pl/releases/8/vendor/glushkovds/php-smpp/src/Pdu/Ussd.php on line 5