Fatal error: Uncaught Error: Class "Mustache_Loader_FilesystemLoader" not found in /srv/www/htdocs/moodle/lib/mustache/src/Mustache/Loader/ProductionFilesystemLoader.php:19 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/mustache/src/Mustache/Loader/ProductionFilesystemLoader.php on line 19