The connection implementation for btspp cannot be found

[Xavier Sarsanedas Trias]

Hi everyone!

I'm developing a project where I'm communicating between an Android  mobile and a computer with ArchLinux ARM Operating System. The objective is having a serial channel to be able to communicate between this devices.

This project worked me fine. But now, I have had to update the ArchLinux system and now I have problems with bluetooth communication.

I developed a java program that use BlueCove version 2.1.1-SNAPSHOT.
The problem appears when I try to run the program. The error occurs when the program executes the bold line code:

LocalDevice bluetoothUMBER = null;
StreamConnectionNotifier connexioNotificador = null;
StreamConnection fluxConnexio = null;
       
        try {                        
            bluetoothUMBER = LocalDevice.getLocalDevice();                    
            bluetoothUMBER.setDiscoverable(DiscoveryAgent.GIAC);
            connexioNotificador = (StreamConnectionNotifier) Connector.open(URL_SERVEI);

//THIS IS THE CONTENT OF URL_SERVEI --> btspp://localhost:0000110100001000800000805f9b34fb;name=RemoteControl

And the error that shows is:

BlueCove version 2.1.1-SNAPSHOT on bluez
[ERROR]: The connection implementation for btspp cannot be found.
javax.microedition.io.ConnectionNotFoundException: The connection implementation for btspp cannot be found.
        at javax.microedition.io.Connector.open(Connector.java:238)
        at javax.microedition.io.Connector.open(Connector.java:181)
        at javax.microedition.io.Connector.open(Connector.java:162)
        at UmberServer.esperarConnexions(UmberServer.java:41)
        at UmberServer.run(UmberServer.java:26)
[INFO]: Esperant connexions remotes...
[ERROR]: null
java.lang.NullPointerException
        at UmberServer.esperarConnexions(UmberServer.java:70)
        at UmberServer.run(UmberServer.java:26)
BlueCove stack shutdown completed

I'm not sure where is the problem. What does it mean this error?

Before update the system I used the bluez 4, and now I see that the bluez is updated at bluez 5.24

Perhaps Bluecove 2.1.1 isn't compatible with bluez 5.24?
I'm leaving something important to configure?

Thank you!