0 Joomla\CMS\Mail\MailerFactory::createMailer(): Return value must be of type Joomla\CMS\Mail\MailerInterface, Joomla\CMS\Mail\Mail returned #0 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/libraries/src/Factory.php(708): Joomla\CMS\Mail\MailerFactory->createMailer(Object(Joomla\Registry\Registry)) #1 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/libraries/src/Factory.php(490): Joomla\CMS\Factory::createMailer() #2 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/libraries/src/Mail/MailTemplate.php(103): Joomla\CMS\Factory::getMailer() #3 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/plugins/system/updatenotification/src/Extension/UpdateNotification.php(239): Joomla\CMS\Mail\MailTemplate->__construct('plg_system_upda...', 'de-DE') #4 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/libraries/src/Plugin/CMSPlugin.php(289): Joomla\Plugin\System\UpdateNotification\Extension\UpdateNotification->onAfterRender() #5 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/libraries/vendor/joomla/event/src/Dispatcher.php(486): Joomla\CMS\Plugin\CMSPlugin->Joomla\CMS\Plugin\{closure}(Object(Joomla\Event\Event)) #6 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/libraries/src/Application/EventAware.php(111): Joomla\Event\Dispatcher->dispatch('onAfterRender', Object(Joomla\Event\Event)) #7 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/libraries/src/Application/CMSApplication.php(1031): Joomla\CMS\Application\WebApplication->triggerEvent('onAfterRender') #8 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/libraries/src/Application/SiteApplication.php(724): Joomla\CMS\Application\CMSApplication->render() #9 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/libraries/src/Application/CMSApplication.php(298): Joomla\CMS\Application\SiteApplication->render() #10 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/includes/app.php(61): Joomla\CMS\Application\CMSApplication->execute() #11 /var/www/vhosts/h245318.web53.alfahosting-server.de/html/webshop2022/index.php(32): require_once('/var/www/vhosts...') #12 {main}