java.util.ConcurrentModificationException: null
at java.util.ArrayList$SubList$1.next(ArrayList.java:1133)
at java.util.AbstractCollection.toArray(AbstractCollection.java:141)
at java.util.ArrayList.<init>(ArrayList.java:191)
at com.permobil.psds.wearos.SensorService._SaveData(SensorService.java:342)
at com.permobil.psds.wearos.SensorService.access$400(SensorService.java:56)
at com.permobil.psds.wearos.SensorService$SaveRunnable.run(SensorService.java:227)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.os.HandlerThread.run(HandlerThread.java:65)