Cant grant permission from the accessibility option

[Ghost5772712]

Every time I try installing an app that has some permissions that is needed to be granted from the accessibility option in settings, my s7 edge shows a message that says "because an app is obscuring your permission request, settings can't verify your response". I tried safe mode and nothing happened. I tried instantly again after coming out from safe mode and it seemed to work but if I turn it off and on again.. it shows the same message. Is there any solution for it?
I'm using android 7.0 btw

 

[Tim1954]

Is this one particular app or all apps?
I generally start with cache partition wipe, especially after big updates like Nougat... Try that and see if that works..