NullPointerException

[tianxiaogu]

Reproducing:

1. Navigate to Storage. You will find two folders emulated and self.
2. Long click on emulated.
3. Open menu (top-right) and select Copy.
4. Click the paste button on the top bar.

Affected version:

1.5.6 from F-Droid

java.lang.NullPointerException
	at com.veniosg.dir.mvvm.a.c.b.b$a.c(Unknown Source)
	at com.veniosg.dir.mvvm.a.c.b.b$a.a(Unknown Source)
	at com.veniosg.dir.mvvm.a.c.b.b$a.a(Unknown Source)
	at com.veniosg.dir.mvvm.a.c.b.b.a(Unknown Source)
	at com.veniosg.dir.mvvm.a.c.b.b.c(Unknown Source)
	at com.veniosg.dir.mvvm.a.c.b.l.a(Unknown Source)
	at com.veniosg.dir.android.service.CopyService.a(Unknown Source)
	at com.veniosg.dir.android.service.CopyService.onHandleIntent(Unknown Source)
	at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:66)
	at android.os.Handler.dispatchMessage(Handler.java:102)
	at android.os.Looper.loop(Looper.java:148)
	at android.os.HandlerThread.run(HandlerThread.java:61)