[L6] Temporarily hack around theme system to maintain views without having to edit tons of code

app/Providers/AppServiceProvider.php

@@ -10,6 +10,7 @@ use Pterodactyl\Models\Subuser;
 use Illuminate\Support\Facades\Schema;
 use Illuminate\Support\ServiceProvider;
 use Pterodactyl\Observers\UserObserver;
+use Pterodactyl\Extensions\Themes\Theme;
 use Pterodactyl\Observers\ServerObserver;
 use Pterodactyl\Observers\SubuserObserver;
 
@@ -40,6 +41,10 @@ class AppServiceProvider extends ServiceProvider
         if (! config('pterodactyl.load_environment_only', false) && $this->app->environment() !== 'testing') {
             $this->app->register(SettingsServiceProvider::class);
         }
+
+        $this->app->singleton('extensions.themes', function () {
+            return new Theme;
+        });
     }
 
     /**