Exception encountered, of type "Error"
[34ef976919c35add9d9d4c69] / Error from line 41 of /var/www/mediawiki/extensions/SimpleSecurity/SimpleSecurity_body.php: Call to undefined function wfLoadExtensionMessages()
Backtrace:
#0 /var/www/mediawiki/extensions/SimpleSecurity/SimpleSecurity.php(133): SimpleSecurity->__construct()
#1 /var/www/mediawiki/includes/Setup.php(838): wfSetupSimpleSecurity()
#2 /var/www/mediawiki/includes/WebStart.php(137): require_once(string)
#3 /var/www/mediawiki/index.php(40): require(string)
#4 {main}