Fatal error: Uncaught Error: SMW\Setup::registerExtensionCheck(): Argument #1 ($vars) could not be passed by reference in /var/www/html/mediawiki-35/extensions/SemanticMediaWiki/SemanticMediaWiki.php:72 Stack trace: #0 /var/www/html/mediawiki-35/extensions/SemanticMediaWiki/SemanticMediaWiki.php(18): SemanticMediaWiki::load() #1 /var/www/html/mediawiki-35/vendor/composer/autoload_real.php(73): require('...') #2 /var/www/html/mediawiki-35/vendor/composer/autoload_real.php(63): composerRequire_mediawiki_vendor() #3 /var/www/html/mediawiki-35/vendor/autoload.php(7): ComposerAutoloaderInit_mediawiki_vendor::getLoader() #4 /var/www/html/mediawiki-35/includes/Setup.php(107): require_once('...') #5 /var/www/html/mediawiki-35/includes/WebStart.php(89): require_once('...') #6 /var/www/html/mediawiki-35/index.php(44): require('...') #7 {main} thrown in /var/www/html/mediawiki-35/extensions/SemanticMediaWiki/SemanticMediaWiki.php on line 72