Encore\Admin\Providers\AdminServiceProvider::setupAuth PHP Method

    protected function setupAuth()
    {
        config(['auth.guards.admin.driver' => 'session', 'auth.guards.admin.provider' => 'admin', 'auth.providers.admin.driver' => 'eloquent', 'auth.providers.admin.model' => 'Encore\\Admin\\Auth\\Database\\Administrator']);
    }