When i click "Not Now" button

during login with facebook it sends me to the previous url along with status code

https://localhost:3000/facebook/redirect?error=access_denied&error_code=200&error_description=Permissions+error&error_reason=user_denied#_=_

Can someone tell me how I can customize this URL if the user clicks on the not now button then we will redirect to some other url like localhost:3000/deauthUrl?