Android Question Error with SIP library example

I'm trying to run an example from the SIP library on a device with Android 13
I made edits to the example manifest:
<uses-sdk android:minSdkVersion="19" android:targetSdkVersion="30"/>
And also changed the connection string to my data.
When I run it, I get an error:


--------- beginning of main
** Activity (main) Create (first time) **
main_activity_create (java line: 364)
android.net.sip.SipException: SipService is dead and is restarting...
at android.net.sip.SipManager.checkSipServiceConnection(SipManager.java:205)
at android.net.sip.SipManager.open(SipManager.java:266)
at anywheresoftware.b4a.objects.SIP.Register(SIP.java:169)
at anywheresoftware.b4a.samples.sip.main._activity_create(main.java:364)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:221)
at anywheresoftware.b4a.samples.sip.main.afterFirstLayout(main.java:105)
at anywheresoftware.b4a.samples.sip.main.access$000(main.java:17)
at anywheresoftware.b4a.samples.sip.main$WaitForLayout.run(main.java:83)
at android.os.Handler.handleCallback(Handler.java:942)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:211)
at android.os.Looper.loop(Looper.java:300)
at android.app.ActivityThread.main(ActivityThread.java:8410)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:559)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:954)
Caused by: java.lang.Exception
... 17 more
android.net.sip.SipException: SipService is dead and is restarting...
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = false **



Can you tell me what this means and how to fix it?