Fatal error: Uncaught Error: Class "MailPoet\Newsletter\Renderer\Blocks\Header" not found in /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php:3991 Stack trace: #0 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(4001): MailPoetGenerated\FreeCachedContainer->getRenderer4Service() #1 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(4031): MailPoetGenerated\FreeCachedContainer->getBodyRendererService() #2 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(5088): MailPoetGenerated\FreeCachedContainer->getRenderer6Service() #3 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(5098): MailPoetGenerated\FreeCachedContainer->getConfirmationEmailCustomizerService() #4 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(5198): MailPoetGenerated\FreeCachedContainer->getConfirmationEmailMailerService() #5 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(5368): MailPoetGenerated\FreeCachedContainer->getSubscriberActionsService() #6 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(2612): MailPoetGenerated\FreeCachedContainer->getCommentService() #7 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(2640): MailPoetGenerated\FreeCachedContainer->getHooks2Service() #8 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/symfony/dependency-injection/Container.php(122): MailPoetGenerated\FreeCachedContainer->getInitializerService() #9 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/symfony/dependency-injection/Container.php(110): MailPoetVendor\Symfony\Component\DependencyInjection\Container->make('MailPoet\\Config...', 1) #10 /htdocs/wp-content/plugins/mailpoet/lib/DI/ContainerWrapper.php(39): MailPoetVendor\Symfony\Component\DependencyInjection\Container->get('MailPoet\\Config...') #11 /htdocs/wp-content/plugins/mailpoet/mailpoet_initializer.php(89): MailPoet\DI\ContainerWrapper->get('MailPoet\\Config...') #12 /htdocs/wp-content/plugins/mailpoet/mailpoet.php(194): require_once('/htdocs/wp-cont...') #13 /htdocs/wp-settings.php(526): include_once('/htdocs/wp-cont...') #14 /htdocs/wp-config.php(85): require_once('/htdocs/wp-sett...') #15 /htdocs/wp-load.php(50): require_once('/htdocs/wp-conf...') #16 /htdocs/wp-blog-header.php(13): require_once('/htdocs/wp-load...') #17 /htdocs/index.php(17): require('/htdocs/wp-blog...') #18 {main} thrown in /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php on line 3991