Error package:discover !

[livevasiliy]

Hi, @pingpong-labs I have some problem with your package on Laravel version 5.8.
I can't discover your packages. I add in config/app.php your class MenusServiceProvider an alias for a package. But after call php artisan vendor:publish I get next error from composer:

Symfony\Component\Debug\Exception\FatalThrowableError : Call to undefined method Illuminate\Foundation\Application::share()

at C:\Users\vasil\pingpong-test\vendor\pingpong\menus\MenusServiceProvider.php:43
39| public function register()
40| {
41| $this->registerHtmlPackage();
42|

43| $this->app['menus'] = $this->app->share(function ($app) {
44| return new Menu($app['view'], $app['config']);
45| });
46| }
47|

Exception trace:

1 Pingpong\Menus\MenusServiceProvider::register()
C:\Users\vasil\pingpong-test\vendor\laravel\framework\src\Illuminate\Foundation\Application.php:607

2 Illuminate\Foundation\Application::register(Object(Pingpong\Menus\MenusServiceProvider))
C:\Users\vasil\pingpong-test\vendor\laravel\framework\src\Illuminate\Foundation\Application.php:741

Please use the argument -v to see more details.

C:\Users\vasil\pingpong-test>php artisan config:publish pingpong/menus --provider

Symfony\Component\Debug\Exception\FatalThrowableError : Call to undefined method Illuminate\Foundation\Application::share()

at C:\Users\vasil\pingpong-test\vendor\pingpong\menus\MenusServiceProvider.php:43
39| public function register()
40| {
41| $this->registerHtmlPackage();
42|

43| $this->app['menus'] = $this->app->share(function ($app) {
44| return new Menu($app['view'], $app['config']);
45| });
46| }
47|

Exception trace:

1 Pingpong\Menus\MenusServiceProvider::register()
C:\Users\vasil\pingpong-test\vendor\laravel\framework\src\Illuminate\Foundation\Application.php:607

2 Illuminate\Foundation\Application::register(Object(Pingpong\Menus\MenusServiceProvider))
C:\Users\vasil\pingpong-test\vendor\laravel\framework\src\Illuminate\Foundation\Application.php:741

Please use the argument -v to see more details.

P.S: composer dump-autoload or composer update not help me. Please fix for lasted versions Laravel.