Fatal error: Uncaught RuntimeException: The configuration setting 'wgCaptchaClass' was already set by MediaWiki core or another extension, and cannot be set again by QuestyCaptcha. in /home/appropedia/public_html_upgrade/w/includes/registration/ExtensionProcessor.php:719 Stack trace: #0 /home/appropedia/public_html_upgrade/w/includes/registration/ExtensionProcessor.php(700): ExtensionProcessor->addConfigGlobal('wgCaptchaClass', 'QuestyCaptcha', 'QuestyCaptcha') #1 /home/appropedia/public_html_upgrade/w/includes/registration/ExtensionProcessor.php(227): ExtensionProcessor->extractConfig2(Array, '/home/appropedi...') #2 /home/appropedia/public_html_upgrade/w/includes/registration/ExtensionRegistry.php(394): ExtensionProcessor->extractInfo('/home/appropedi...', Array, 2) #3 /home/appropedia/public_html_upgrade/w/includes/registration/ExtensionRegistry.php(229): ExtensionRegistry->readFromQueue(Array) #4 /home/appropedia/public_html_upgrade/w/includes/Setup.php(161): ExtensionRegistry->loadFromQueue() #5 /home/appropedia/publ in /home/appropedia/public_html_upgrade/w/includes/registration/ExtensionProcessor.php on line 719