Authentication failed with google drive when trying to get photos

Hello everyone,

I got a problem, when i take photos on my phone with avast anti theft i cant see them cause authentication fail with google drive.
how to repair this ?

Thanks.

Edit: I recently changed my Gmail passwords. (someone stole my phone, but thanks to avast, i got it back from the stealer now xD, but i noticed the photos and sound records didnt work cause of google drive authentication since i changed my gmail passwords.)