Android crash happening in some background apps

I'm facing a very annoying android crash that happen in around 1% of PRODUCTION the sessions with app ALWAYS in background.

Fatal Exception: android.app.RemoteServiceException: Attempt to invoke virtual method 'int com.android.server.wm.TaskDisplayArea.getDisplayId()' on a null object reference
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2054)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loop(Looper.java:250)
       at android.app.ActivityThread.main(ActivityThread.java:7755)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:958)

From this stack is clear that it comes from a internal android MainLooper operation... but the lack of extra information difficults for me to discover WHAT exactly

does anyone know what is this problem and how to solve it?

from Android crash happening in some background apps