Uncaught SmppException: Bind Failed

[GeekGuste]

Hello,
I use the smpp library to connect to a remote smpp server. Opening the connection works well but when I run a bindTransmitter I get the following error:

[19-Sep-2019 23:28:13 Europe/Paris] PHP Fatal error: Uncaught SmppException: Bind Failed in /home/tincaxxc/catchit.cap-culture.info/smpp-server/smppclient.class.php:622
Stack trace:
#0 /home/tincaxxc/catchit.cap-culture.info/smpp-server/smppclient.class.php(479): SmppClient->sendCommand(2, 'myusername\x00mypassword...')
#1 /home/tincaxxc/catchit.cap-culture.info/smpp-server/smppclient.class.php(134): SmppClient->_bind('myusername', 'mypassword', 2)
#2 /home/tincaxxc/catchit.cap-culture.info/smpp-server/send.php(24): SmppClient->bindTransmitter('myusername', 'mypassword')
#3 {main}
thrown in /home/tincaxxc/catchit.cap-culture.info/smpp-server/smppclient.class.php on line 622

This is my code

setRecvTimeout(10000); $smpp = new SmppClient($transport); // Activate binary hex-output of server interaction $smpp->debug = true; $transport->debug = true; $transport->setSendTimeout(30000); // Open the connection $transport->open(); $smpp->bindTransmitter($username,$password);