Fatal error: Uncaught ExtensionDependencyError: Popups is not compatible with the current MediaWiki core (version 1.39.4), it requires: >= 1.40.0. in /usr/www/users/tuepei/1.39.4/includes/registration/ExtensionRegistry.php:432 Stack trace: #0 /usr/www/users/tuepei/1.39.4/includes/registration/ExtensionRegistry.php(276): ExtensionRegistry->readFromQueue() #1 /usr/www/users/tuepei/1.39.4/includes/Setup.php(278): ExtensionRegistry->loadFromQueue() #2 /usr/www/users/tuepei/1.39.4/includes/WebStart.php(86): require_once('/usr/www/users/...') #3 /usr/www/users/tuepei/1.39.4/index.php(44): require('/usr/www/users/...') #4 {main} thrown in /usr/www/users/tuepei/1.39.4/includes/registration/ExtensionRegistry.php on line 432