fixed the Bus command Handling forwarding the call to a matching Handler class

src/Bus/BusServiceProvider.php

@@ -0,0 +1,28 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Bus;
+
+use Flarum\Foundation\AbstractServiceProvider;
+use Illuminate\Contracts\Bus\Dispatcher as BusContract;
+use Illuminate\Contracts\Queue\Factory as QueueFactoryContract;
+
+class BusServiceProvider extends AbstractServiceProvider
+{
+    public function boot()
+    {
+        $this->app->bind(BusContract::class, function ($app) {
+            return new Dispatcher($app, function ($connection = null) use ($app) {
+                return $app[QueueFactoryContract::class]->connection($connection);
+            });
+        });
+    }
+}

src/Bus/Dispatcher.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace Flarum\Bus;
+
+use Illuminate\Bus\Dispatcher as BaseDispatcher;
+
+class Dispatcher extends BaseDispatcher
+{
+    public function getCommandHandler($command)
+    {
+        $handler = get_class($command) . 'Handler';
+
+        if (class_exists($handler)) {
+            return $this->container->make($handler);
+        }
+
+        return parent::getCommandHandler($command);
+    }
+}

src/Foundation/Site.php

@@ -13,6 +13,7 @@ namespace Flarum\Foundation;
 
 use Flarum\Admin\AdminServiceProvider;
 use Flarum\Api\ApiServiceProvider;
+use Flarum\Bus\BusServiceProvider as BusProvider;
 use Flarum\Database\DatabaseServiceProvider;
 use Flarum\Database\MigrationServiceProvider;
 use Flarum\Discussion\DiscussionServiceProvider;
@@ -166,6 +167,8 @@ class Site
         $app->register(ViewServiceProvider::class);
         $app->register(ValidationServiceProvider::class);
 
+        $app->register(BusProvider::class);
+
         if ($app->isInstalled() && $app->isUpToDate()) {
             $settings = $app->make(SettingsRepositoryInterface::class);
 

src/Locale/LocaleServiceProvider.php

@@ -14,9 +14,11 @@ namespace Flarum\Locale;
 use Flarum\Event\ConfigureLocales;
 use Flarum\Foundation\AbstractServiceProvider;
 use Illuminate\Contracts\Events\Dispatcher;
-use Symfony\Component\Translation\MessageSelector;
-use Symfony\Component\Translation\Translator;
-use Symfony\Component\Translation\TranslatorInterface;
+use Illuminate\Translation\Translator;
+use Illuminate\Translation\FileLoader;
+//use Symfony\Component\Translation\MessageSelector;
+//use Symfony\Component\Translation\Translator;
+//use Symfony\Component\Translation\TranslatorInterface;
 
 class LocaleServiceProvider extends AbstractServiceProvider
 {