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Fatal error: Uncaught Error: Call to undefined function enableSemantics() in /var/lib/mediawiki/LocalSettings.php:208 Stack trace: #0 /var/lib/mediawiki/includes/Setup.php(105): require_once() #1 /var/lib/mediawiki/includes/WebStart.php(77): require_once('/var/lib/mediaw...') #2 /var/lib/mediawiki/index.php(39): require('/var/lib/mediaw...') #3 {main} thrown in /var/lib/mediawiki/LocalSettings.php on line 208