I have upgraded a D6 to D7 site on my localhost. After upgrade I can login using admin credentials as per usual. I have disabled Clean URLs and I see that users are in detabase. Actually all works well however when I try to log in to a user account, I get:
The website encountered an unexpected error. Please try again later
I get this error also, when I create a user from admin panel. I tested a lot of suggestions but none helped. So appreciate your hints.