Fatal error: Uncaught Error: Class "Illuminate\Foundation\Events\DiscoverEvents" not found in /home/kda01/kpba.edu.ua/works/lib/pkp/classes/core/EventServiceProvider.php:58
Stack trace:
#0 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Foundation/Support/Providers/EventServiceProvider.php(105): PKP\core\EventServiceProvider->discoverEvents()
#1 /home/kda01/kpba.edu.ua/works/lib/pkp/classes/core/EventServiceProvider.php(36): Illuminate\Foundation\Support\Providers\EventServiceProvider->discoveredEvents()
#2 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/elcobvg/laravel-opcache/src/Repository.php(25): PKP\core\EventServiceProvider->PKP\core\{closure}()
#3 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Cache/CacheManager.php(419): ElcoBvg\Opcache\Repository->remember('PKP\\core\\EventS...', Object(DateInterval), Object(Closure))
#4 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php(338): Illuminate\Cache\CacheManager->__call('remember', Array)
#5 /home/kda01/kpba.edu.ua/works/lib/pkp/classes/core/EventServiceProvider.php(36): Illuminate\Support\Facades\Facade::__callStatic('remember', Array)
#6 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Foundation/Support/Providers/EventServiceProvider.php(40): PKP\core\EventServiceProvider->getEvents()
#7 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(36): Illuminate\Foundation\Support\Providers\EventServiceProvider->Illuminate\Foundation\Support\Providers\{closure}()
#8 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Container/Util.php(41): Illuminate\Container\BoundMethod::Illuminate\Container\{closure}()
#9 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(81): Illuminate\Container\Util::unwrapIfClosure(Object(Closure))
#10 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(35): Illuminate\Container\BoundMethod::callBoundMethod(Object(PKP\core\PKPContainer), Object(Closure), Object(Closure))
#11 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Container/Container.php(661): Illuminate\Container\BoundMethod::call(Object(PKP\core\PKPContainer), Object(Closure), Array, NULL)
#12 /home/kda01/kpba.edu.ua/works/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Support/ServiceProvider.php(103): Illuminate\Container\Container->call(Object(Closure))
#13 /home/kda01/kpba.edu.ua/works/lib/pkp/classes/core/PKPContainer.php(140): Illuminate\Support\ServiceProvider->callBootingCallbacks()
#14 /home/kda01/kpba.edu.ua/works/lib/pkp/classes/core/PKPContainer.php(122): PKP\core\PKPContainer->register(Object(PKP\core\EventServiceProvider))
#15 /home/kda01/kpba.edu.ua/works/lib/pkp/classes/core/PKPApplication.php(228): PKP\core\PKPContainer->registerConfiguredProviders()
#16 /home/kda01/kpba.edu.ua/works/lib/pkp/classes/core/PKPApplication.php(200): PKP\core\PKPApplication->initializeLaravelContainer()
#17 /home/kda01/kpba.edu.ua/works/classes/core/Application.php(50): PKP\core\PKPApplication->__construct()
#18 /home/kda01/kpba.edu.ua/works/lib/pkp/includes/bootstrap.php(37): APP\core\Application->__construct()
#19 /home/kda01/kpba.edu.ua/works/index.php(18): require_once('/home/kda01/kpb...')
#20 {main}
thrown in /home/kda01/kpba.edu.ua/works/lib/pkp/classes/core/EventServiceProvider.php on line 58