When humans make judgment errors that are in favor of the self it is called the?

It is called the "self-serving bias".

The self-serving bias is individuals' propensity to credit positive occasions to their own character yet ascribe negative occasions to outer variables. It's a typical kind of psychological predisposition that has been widely contemplated. At the point when people dismiss the legitimacy of negative input, center around their qualities and accomplishments however ignore their flaws and disappointments, they are shielding their ego from danger and damage.