Fatal error: Uncaught Error: Class "MailPoetVendor\Twig\Extension\StagingExtension" not found in /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/twig/twig/src/ExtensionSet.php:32
Stack trace:
#0 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/twig/twig/src/Environment.php(66): MailPoetVendor\Twig\ExtensionSet->__construct()
#1 /htdocs/wp-content/plugins/mailpoet/lib/Config/Renderer.php(29): MailPoetVendor\Twig\Environment->__construct(Object(MailPoetVendor\Twig\Loader\FilesystemLoader), Array)
#2 /htdocs/wp-content/plugins/mailpoet/lib/Config/RendererFactory.php(19): MailPoet\Config\Renderer->__construct(false, '/htdocs/wp-cont...', Object(MailPoetVendor\Twig\Loader\FilesystemLoader), false)
#3 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(2683): MailPoet\Config\RendererFactory->getRenderer()
#4 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(2637): MailPoetGenerated\FreeCachedContainer->getRendererService()
#5 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/symfony/dependency-injection/Container.php(122): MailPoetGenerated\FreeCachedContainer->getInitializerService()
#6 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/symfony/dependency-injection/Container.php(110): MailPoetVendor\Symfony\Component\DependencyInjection\Container->make('MailPoet\\Config...', 1)
#7 /htdocs/wp-content/plugins/mailpoet/lib/DI/ContainerWrapper.php(39): MailPoetVendor\Symfony\Component\DependencyInjection\Container->get('MailPoet\\Config...')
#8 /htdocs/wp-content/plugins/mailpoet/mailpoet_initializer.php(89): MailPoet\DI\ContainerWrapper->get('MailPoet\\Config...')
#9 /htdocs/wp-content/plugins/mailpoet/mailpoet.php(194): require_once('/htdocs/wp-cont...')
#10 /htdocs/wp-settings.php(526): include_once('/htdocs/wp-cont...')
#11 /htdocs/wp-config.php(85): require_once('/htdocs/wp-sett...')
#12 /htdocs/wp-load.php(50): require_once('/htdocs/wp-conf...')
#13 /htdocs/wp-blog-header.php(13): require_once('/htdocs/wp-load...')
#14 /htdocs/index.php(17): require('/htdocs/wp-blog...')
#15 {main}
thrown in /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/twig/twig/src/ExtensionSet.php on line 32