After editing profile, then device orientation changes. App suddenly crashes

Expected behavior

After profile has been edited, and device orientation changes. App should still remain the same.

Actual behavior

When profile has been edited, and device orientation changes. App suddenly crashes.

How to reproduce

Download easer app on fdriod.
Open app, on the top left corner of the app. Click on the menu option.
From the pop menu, select profile.
Edit profile to your satisfaction. Then change device orientation.
Bug is detected.

• Application: easer app version 0.5.7
• Operating system: android 7.0 nougat. Tecno wx3p

Recording Of The Bug