BUG MK Music Player.

BUG Music and Ringtone on MK7.12 Redmi 4X Latest Build.

The music player app does not run normally and there is often force close, no sound ringtone and force close when setting sound when there is music ringtone in storage. this bug I have experienced since 2 months ago but still not fixed from developer? I am very disappointed, but I have long used this ROM since 2015 Mi4w Cancro Devices.