Fatal error: Uncaught TypeError: MailPoet\EmailEditor\Engine\Renderer\ContentRenderer\ProcessManager::registerPostprocessor(): Argument #1 ($postprocessor) must be of type MailPoet\EmailEditor\Engine\Renderer\ContentRenderer\Postprocessors\Postprocessor, MailPoet\EmailEditor\Engine\Renderer\ContentRenderer\Postprocessors\HighlightingPostprocessor given, called in /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/lib/EmailEditor/Engine/Renderer/ContentRenderer/ProcessManager.php on line 39 and defined in /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/lib/EmailEditor/Engine/Renderer/ContentRenderer/ProcessManager.php:67 Stack trace: #0 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/lib/EmailEditor/Engine/Renderer/ContentRenderer/ProcessManager.php(39): MailPoet\EmailEditor\Engine\Renderer\ContentRenderer\ProcessManager->registerPostprocessor() #1 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(3358): MailPoet\EmailEditor\Engine\Renderer\ContentRenderer\ProcessManager->__construct() #2 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(3278): MailPoetGenerated\FreeCachedContainer->getProcessManagerService() #3 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(3368): MailPoetGenerated\FreeCachedContainer->getContentRendererService() #4 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(3933): MailPoetGenerated\FreeCachedContainer->getRenderer2Service() #5 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(4980): MailPoetGenerated\FreeCachedContainer->getRenderer6Service() #6 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(4990): MailPoetGenerated\FreeCachedContainer->getConfirmationEmailCustomizerService() #7 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(5080): MailPoetGenerated\FreeCachedContainer->getConfirmationEmailMailerService() #8 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(5240): MailPoetGenerated\FreeCachedContainer->getSubscriberActionsService() #9 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(2584): MailPoetGenerated\FreeCachedContainer->getCommentService() #10 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(2612): MailPoetGenerated\FreeCachedContainer->getHooks2Service() #11 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/vendor-prefixed/symfony/dependency-injection/Container.php(122): MailPoetGenerated\FreeCachedContainer->getInitializerService() #12 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/vendor-prefixed/symfony/dependency-injection/Container.php(110): MailPoetVendor\Symfony\Component\DependencyInjection\Container->make() #13 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/lib/DI/ContainerWrapper.php(39): MailPoetVendor\Symfony\Component\DependencyInjection\Container->get() #14 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/mailpoet_initializer.php(89): MailPoet\DI\ContainerWrapper->get() #15 /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/mailpoet.php(194): require_once('/homepages/15/d...') #16 /homepages/15/d4296222874/htdocs/wordpress/wp-settings.php(517): include_once('/homepages/15/d...') #17 /homepages/15/d4296222874/htdocs/wordpress/wp-config.php(106): require_once('/homepages/15/d...') #18 /homepages/15/d4296222874/htdocs/wordpress/wp-load.php(50): require_once('/homepages/15/d...') #19 /homepages/15/d4296222874/htdocs/wordpress/wp-blog-header.php(13): require_once('/homepages/15/d...') #20 /homepages/15/d4296222874/htdocs/wordpress/index.php(17): require('/homepages/15/d...') #21 {main} thrown in /homepages/15/d4296222874/htdocs/wordpress/wp-content/plugins/mailpoet/lib/EmailEditor/Engine/Renderer/ContentRenderer/ProcessManager.php on line 67