Background mode gives Error Targeting S+ (version 31 and above) on an…

…droid

katzer#577

src/android/ForegroundService.java

@@ -222,7 +222,7 @@ private Notification makeNotification (JSONObject settings)
             intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
             PendingIntent contentIntent = PendingIntent.getActivity(
                     context, NOTIFICATION_ID, intent,
-                    PendingIntent.FLAG_UPDATE_CURRENT);
+                    PendingIntent.FLAG_IMMUTABLE);
 
 
             notification.setContentIntent(contentIntent);