I have presented a solution to the problem displayed above.
1-The most important thing you have to do is to update your mi device instantly if any update is pending.
2-The next most important thing is that if you have installed any third party service or app related to MI themes and their customisation…..like custom font, custom wallpaper, custom ringtone, custom theme etc….then please uninstall it and reboot your device. Then check whether the problem persist.
3-If the problem was not solved please click here https://sg.support.kefu.mi.com/page/index/v2?tag=cn&token=Y24ud2ViLm1pLmVuI2RlZmF1bHQ&locale=en to chat with any MI agent freely.
And describe your problem they may solve your problem more efficiently.
Besides, this please reply to this message about whether your issue was solved or not?
You can call XIAOMI at 1800 103 6286 for free.
Please, contact and raise your query.
MyAndro Box 
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