LogicException Error

Part of one of my controllers for my users is utilized to update the user's profile. Everything works except whenever I try to update the password, which always throws the error Relationship method must return an object of type Illuminate\Database\Eloquent\Relations\Relation.

The code I am using is:

public function UsersUpdate($id, Request $request){

        $user = User::find($id);
        $newPassword = bcrypt($request->get['password']);
        if(empty($newPassword)){
            $user->update($request->except('password'));
        } else {
            $user->name = $request->get('name');
            $user->email = $request->get('email');
            $user->role = $request->get('role');
            $user->password = $newPassword;
            $user->save;
       }

        return redirect('portal/users');
    }