Fatal error: Uncaught Error: Class "Wikimedia\NormalizedException\NormalizedException" not found in C:\xampp\htdocs\extensions\DiscussionTools\includes\PageNeverHadThreadsException.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\DiscussionTools\includes\PageNeverHadThreadsException.php on line 7