Warning: require_once(includes/DefaultSettings.php): Failed to open stream: No such file or directory in /var/www/nuclear/mediawiki-1.46.2/LocalSettings.php on line 28

Fatal error: Uncaught Error: Failed opening required 'includes/DefaultSettings.php' (include_path='/var/www/nuclear/mediawiki-1.46.2:/var/www/nuclear/mediawiki-1.46.2/includes:/var/www/nuclear/mediawiki-1.46.2/languages') in /var/www/nuclear/mediawiki-1.46.2/LocalSettings.php:28 Stack trace: #0 /var/www/nuclear/mediawiki-1.46.2/includes/Setup.php(213): require_once() #1 /var/www/nuclear/mediawiki-1.46.2/includes/WebStart.php(73): require_once('...') #2 /var/www/nuclear/mediawiki-1.46.2/index.php(36): require('...') #3 {main} thrown in /var/www/nuclear/mediawiki-1.46.2/LocalSettings.php on line 28