Can't listen to incoming DLR

[pelcasandra]

I'm not being able to receive DLR. I can connect but after a few seconds I got the following error:

smpp-cli listen 7070 -h 127.0.0.1 -p 13004  -L user -P pass  -C ~/Desktop/DLR.log
Connected to SMPP @ May 21st 2021, 9:37:59 pm
Started DNode server at 7070
Waiting for SMS...
Started DLRs listener
Waiting for delivery reports...
/usr/local/lib/node_modules/smpp-cli/lib/DeliveryReport.js:28
  this._messageId  = result[1];
                           ^

TypeError: Cannot read property '1' of null
    at DeliveryReport._parseDeliveryReport (/usr/local/lib/node_modules/smpp-cli/lib/DeliveryReport.js:28:28)
    at new DeliveryReport (/usr/local/lib/node_modules/smpp-cli/lib/DeliveryReport.js:15:8)
    at Session.<anonymous> (/usr/local/lib/node_modules/smpp-cli/lib/index.js:81:16)
    at Session.emit (events.js:376:20)
    at Session._extractPDUs (/usr/local/lib/node_modules/smpp-cli/node_modules/smpp/lib/smpp.js:67:8)
    at Socket.emit (events.js:376:20)
    at emitReadable_ (internal/streams/readable.js:569:12)
    at processTicksAndRejections (internal/process/task_queues.js:81:21)

Not sure if this is a bug. Any help is appreciated.