Fatal error: Uncaught Error: Class "MediaWiki\Extension\Math\WikiTexVC\Nodes\Fun1" not found in C:\xampp\htdocs\extensions\Math\src\WikiTexVC\Nodes\Mhchem.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\Math\src\WikiTexVC\Nodes\Mhchem.php on line 7