Fatal error: Uncaught Exception: Unable to open file /usr/local/www/mediawiki/extensions/PluggableAuth/extension.json: filemtime(): stat failed for /usr/local/www/mediawiki/extensions/PluggableAuth/extension.json in /usr/local/www/mediawiki/includes/registration/ExtensionRegistry.php:177 Stack trace: #0 /usr/local/www/mediawiki/includes/GlobalFunctions.php(51): ExtensionRegistry->queue('/usr/local/www/...') #1 /usr/local/www/mediawiki/LocalSettings.php(297): wfLoadExtension('PluggableAuth') #2 /usr/local/www/mediawiki/includes/Setup.php(143): require_once('/usr/local/www/...') #3 /usr/local/www/mediawiki/includes/WebStart.php(89): require_once('/usr/local/www/...') #4 /usr/local/www/mediawiki/index.php(44): require('/usr/local/www/...') #5 {main} thrown in /usr/local/www/mediawiki/includes/registration/ExtensionRegistry.php on line 177