how to fix unfortunately the process com.android.systemui has stopped

How To Fix Unfortunately the process com.android.systemui has stopped Error On Android ? Fix 1: Sometimes,If your Battery is less than 20%.So,that might be .
video is about how to fix unfortunately the process com.android.systemui has stopped-how to fix unfortunately (any app) has stopped in android-how to fix .
this video is about how to fix unfortunately the process com.android.systemui has stopped-how to fix unfortunately the process com.android.phone has stopped .
Error: Unfortunately, System UI has stopped How to fix unfortunately system UI has stopped in android. 1…phone off 2…volume up power on button 3…boot .