neiyou_user_web/app/Providers/EventServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;

class EventServiceProvider extends ServiceProvider {
	/**
	 * The event listener mappings for the application.
	 *
	 * @var array
	 */
	protected $listen = [
		'App\Events\Event'                      => [
			'App\Listeners\EventListener',
		],
		'Illuminate\Mail\Events\MessageSending' => [
			'App\Listeners\LogSendingMessage',
		],
		'Illuminate\Mail\Events\MessageSent'    => [
			'App\Listeners\LogSentMessage',
		],
	];
}