I want to instantiate a singleton class in Laravel:

namespace App\Services;
use Illuminate\Support\Facades\Auth;

class UserService{
//code
$friendRequestService = $this->app->make(FriendRequestService::class);;

I get this error:

Undefined property: App\Services\UserService::$app

CodePudding user response：

Use laravel helper to instantiate a class from the Container:

app()->make();