Fatal error: Uncaught Error: Class 'MediaWiki\Shell\Shell' not found in /var/www/html/diccionario/includes/registration/ExtensionRegistry.php:219 Stack trace: #0 /var/www/html/diccionario/includes/registration/ExtensionRegistry.php(150): ExtensionRegistry->getAbilities() #1 /var/www/html/diccionario/includes/Setup.php(127): ExtensionRegistry->loadFromQueue() #2 /var/www/html/diccionario/includes/WebStart.php(77): require_once('/var/www/html/d...') #3 /var/www/html/diccionario/index.php(39): require('/var/www/html/d...') #4 {main} thrown in /var/www/html/diccionario/includes/registration/ExtensionRegistry.php on line 219