Laravel unexpected error “class user contains 3 abstract methods…”

Question

While programming my Authentication app on Laravel, I came across to an error I\'ve never seen before. I\'ve been brainstorming for almost an hour for the cause of this problem

Answer 1

Class User contains 6 abstract methods and must therefore be declared abstract or implement the remaining methods

(Illuminate\Auth\UserInterface::getAuthIdentifier,

Illuminate\Auth\UserInterface::getAuthPassword,

Illuminate\Auth\UserInterface::getRememberToken, ...)