8192 preg_replace_callback(): Passing null to parameter #3 ($subject) of type array|string is deprecated

Call Stack

# Function Location
1 () JROOT/libraries/gantry5/src/classes/Gantry/Component/Content/Document/HtmlDocument.php:581
2 Whoops\Run->handleError() JROOT/libraries/gantry5/src/classes/Gantry/Component/Whoops/SystemFacade.php:119
3 Gantry\Component\Whoops\SystemFacade->handleError()  
4 preg_replace_callback() JROOT/libraries/gantry5/src/classes/Gantry/Component/Content/Document/HtmlDocument.php:581
5 Gantry\Component\Content\Document\HtmlDocument::urlFilter() JROOT/plugins/system/gantry5/gantry5.php:402
6 plgSystemGantry5->onAfterRenderSite() JROOT/plugins/system/gantry5/gantry5.php:132
7 plgSystemGantry5->onAfterRender() JROOT/libraries/src/Plugin/CMSPlugin.php:289
8 Joomla\CMS\Plugin\CMSPlugin->Joomla\CMS\Plugin\{closure}() JROOT/libraries/vendor/joomla/event/src/Dispatcher.php:454
9 Joomla\Event\Dispatcher->dispatch() JROOT/libraries/vendor/joomla/application/src/AbstractApplication.php:99
10 Joomla\Application\AbstractApplication->dispatchEvent() JROOT/libraries/src/Application/CMSApplication.php:1079
11 Joomla\CMS\Application\CMSApplication->render() JROOT/libraries/src/Application/SiteApplication.php:732
12 Joomla\CMS\Application\SiteApplication->render() JROOT/libraries/src/Application/CMSApplication.php:311
13 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:58
14 require_once() JROOT/index.php:32