It works now in the most cases! But not for all apps. I think, google has tried to fix the issues.
First of all, delete Google Playstore cache, then restart the phone. Then for most apps and in the most time, it should work. But the errors can still occur.
Since yesterday it works for the most apps, and for the most time! It seems to me that Google has tried to fix the issues. But the errors can still occur! Even for the same app, sometime it doesn't work, but in few minutes it works.
First of all you need to delete Playstore cache, then restart the phone.