Google play constantly asks for permissions A few weeks ago my Xiaomi phone (MIUI 8) started showing a permission error, stating that more permissions are necessary. After enabling all of them, the error reoccurred after a few minutes, this time asking for other (previously enabled) permissions (mostly body sensors, storage, sms, etc). 

It is somewhat annoying, since I get a notification every few minutes with the same error, which wakes up my screen. How can I fix this problem and make sure the permissions are always enables?
This issue seems to me like a bug with Google Play Services, probably caused by some of your data within the Services app given that this isn't happening to everyone. Try these steps in order until the issue is resolved:


Check Google Play Services for an update in the Play Store, and if available perform it.
Force Stop Google Play Services in Settings -> Apps -> Google Play Services -> Force Stop.
Log out of your Google account.
Restart your phone.
Log back into Google Play Services.
Clear its data and/or cache in Settings -> Apps -> Google Play Services -> Storage -> Clear Cache/Clear Data.
(According to OP, not necessary): Clear your phone's system cache.


Note: See OP's comments above for how they fixed the issue.



Happy to hear this helped!!