App crashes on trying to pick ringtone after picking one

[neupanedipen]

Expected behavior

The app must be stable on clicking the pick ringtone option after picking a ringtone first.

Actual behavior

But the app crashes on clicking the "Pick Ringtone" option after picking one ringtone already.

How to reproduce

1. Install the app from here.
   
2. Launch the app.
   
3. Click on "Pick Ringtone" option and select one audio file as ringtone.
   
4. Now click on "Pick Ringtone" option again.
   The app crashes.
   App version: 1.3
   Operating system: Android 6.0.1
   Device: Samsung Galaxy J5
   

Recording Of The Bug

https://youtu.be/eLCZI5bdf-Q

[zawawimanja]

same.already try..