You can install Laravel 5.6 with Multiple Authentication (Admin and Users).
How to use:
composer install
php artisan key:generate
php artisan migrate
Use tinker to set Admin email and password
php artisan tinker
$admin = App\Admin
$admin->email = 'admin@app.com'
$admin->password = Hash::make('adminpassword')
$admin->save()
php artisan serve
and go to localhost