Setting option not displaying blank page after making the selection.

Expected behavior

While using this application I went to several features on the app created new lists and many more. So I was trying to check on the settings option on the application to change the application to that of my choice or to check on any more option embedded in the app settings menu

Actual behavior

On getting to click on the settings option which should pop out menu like themes advanced setting and many more. What I experienced was that after clicking it would just just open a blank white option which shouldn't be so.

How to reproduce

On fdriod, download shopping list application.
Then open the app on the task bar at the top fight corner an option menu is included. Open and select on setting.
It will display a blank page with a heading ''file location'' and nothing more.

• Application: shopping list app
• Operating system: andriod 7.0 nougat..

Recording Of The Bug