Fatal error: Uncaught Error: Class "Flarum\Foundation\AbstractServiceProvider" not found in /opt/lampp/htdocs/forum/flarum/vendor/fof/sitemap/src/Providers/Provider.php:30
Stack trace:
#0 {main}
thrown in /opt/lampp/htdocs/forum/flarum/vendor/fof/sitemap/src/Providers/Provider.php on line 30