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