Laravel artisan route:list shows non-object Exception

I am new to laravel. Recently I cloned sample project from github. When I try to execute php artisan route:list shows

PHP Fatal error:  Call to a member function getMemberType() on a non-object in /...app/Http/Controllers/Admin/BaseAdminController.php on line 91

[Symfony\Component\Debug\Exception\FatalErrorException]    
Call to a member function getMemberType() on a non-object  

BaseAdminController.php

public function __construct(EmployeeDetails $employeeDetails)
    {
        $this->middleware('auth');

        if(Auth::user()->getMemberType() != 'employee') //Line 91
        {
            Auth::logout();
            return Redirect::to('secure/login');
        }

from Newest questions tagged laravel-5 - Stack Overflow http://ift.tt/1KrcJ8X
via IFTTT