akietta Fatal error: Class 'Flarum\Forum\Server' not found in D:\xampp\htdocs\test\index.php on line 14
luceos Some more information would be helpful. From what I can guess from the little you provided is that you most probably need to run composer install from your terminal.
Franz akietta You need to install (or enable) the fileinfo extension for PHP - see the error message in the console.
