Fatal error: Uncaught Error: Call to undefined function yaml_parse_file() in /var/www/mediawiki-1.35.13/x/version.php:8 Stack trace: #0 /var/www/mediawiki-1.35.13/x/index.php(6): require_once() #1 {main} thrown in /var/www/mediawiki-1.35.13/x/version.php on line 8