Fatal error: Uncaught Exception: Unable to open file /var/www/wiki.octave.org/mediawiki-1.39.11/extensions/MobileFrontend/extension.json: filemtime(): stat failed for /var/www/wiki.octave.org/mediawiki-1.39.11/extensions/MobileFrontend/extension.json in /var/www/wiki.octave.org/mediawiki-1.39.11/includes/registration/ExtensionRegistry.php:199 Stack trace: #0 /var/www/wiki.octave.org/mediawiki-1.39.11/includes/GlobalFunctions.php(49): ExtensionRegistry->queue() #1 /var/www/wiki.octave.org/mediawiki-1.39.11/LocalSettings.php(229): wfLoadExtension() #2 /var/www/wiki.octave.org/mediawiki-1.39.11/includes/Setup.php(218): require_once('/var/www/wiki.o...') #3 /var/www/wiki.octave.org/mediawiki-1.39.11/includes/WebStart.php(86): require_once('/var/www/wiki.o...') #4 /var/www/wiki.octave.org/mediawiki-1.39.11/index.php(44): require('/var/www/wiki.o...') #5 {main} thrown in /var/www/wiki.octave.org/mediawiki-1.39.11/includes/registration/ExtensionRegistry.php on line 199