After installing the extension on the 15 beta version. an error occurs::
Flarum encountered a boot error (Error)
Class 'Michaelbelgium\Discussionviews\Listeners\AddRelationship' not found
thrown in .../vendor/michaelbelgium/flarum-discussion-views/extend.php on line 26
Error: Class 'Michaelbelgium\Discussionviews\Listeners\AddRelationship' not found in .../vendor/michaelbelgium/flarum-discussion-views/extend.php:26
Stack trace:
#0 .../flarum/core/src/Extension/Extension.php(307): require()
#1 .../vendor/flarum/core/src/Extension/Extension.php(129): Flarum\Extension\Extension->getExtenders()
#2 .../vendor/flarum/core/src/Extension/ExtensionManager.php(334): Flarum\Extension\Extension->extend()
#3 .../vendor/flarum/core/src/Extension/ExtensionServiceProvider.php(30): Flarum\Extension\ExtensionManager->extend()
#4 [internal function]: Flarum\Extension\ExtensionServiceProvider->Flarum\Extension\{closure}()
#5 .../vendor/flarum/core/src/Foundation/Application.php(322): call_user_func()
#6 .../vendor/flarum/core/src/Foundation/Application.php(263): Flarum\Foundation\Application->fireAppCallbacks()
#7 .../vendor/flarum/core/src/Foundation/InstalledSite.php(148): Flarum\Foundation\Application->boot()
#8 .../vendor/flarum/core/src/Foundation/InstalledSite.php(81): Flarum\Foundation\InstalledSite->bootLaravel()
#9 .../vendor/flarum/core/src/Http/Server.php(56): Flarum\Foundation\InstalledSite->bootApp()
#10 .../vendor/flarum/core/src/Http/Server.php(33): Flarum\Http\Server->safelyBootAndGetHandler()
#11 .../index.php(26): Flarum\Http\Server->listen()
#12 {main}