Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /opt/lampp/htdocs/forum/flarum/vendor/pusher/pusher-php-server/test/acceptance/channelQueryTest.php:3 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/pusher/pusher-php-server/test/acceptance/channelQueryTest.php on line 3