[SOLVED] facebook login throws db error

I enabled the fb login on the login module. When I try to login via facebook I get this:

1062 - Duplicate entry '431' for key 'PRIMARY' SQL=INSERT INTO `xsdfd_comprofiler` (`id`,`user_id`,`firstname`,`lastname`,`approved`,`confirmed`,`registeripaddr`,`fb_userid`) VALUES ('431','431','Johann','Ride','1','0','::1','1436957376576538')

Is this because I am on my local mashine with XAMPP?

It looks like your auto increment could be set incorrectly within your _users table. Ensure it's set correctly by checking it using phpmyadmin. It's trying create a new user with a user_id that already exists.

"Ensure it's set correctly by checking it using phpmyadmin."

ok, how exactly do I "ensure" this? And why is it not set correctly right from the installation?

Navigate to your _users database table and check under Operations in phpmyadmin to see what the auto increment value is. Next sort the table by id and see what the last id is and ensure it's not higher than the auto increment value. If it is then set the auto increment value higher. The only way for this to happen is if a user row was added directly to the database (e.g. direct db queries).

Thanks for the explanation. But I hit a road block already on the first step. Where do I see this "increment value"? Please point me to the section in the attached screen.

Check _users, you should see "AUTO_INCREMENT" under "Operations".