Fatal error: Uncaught Error: Class "MailPoetVendor\Doctrine\ORM\Query\FilterCollection" not found in /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/EntityManager.php:464
Stack trace:
#0 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php(1133): MailPoetVendor\Doctrine\ORM\EntityManager->getFilters()
#1 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php(583): MailPoetVendor\Doctrine\ORM\Persisters\Entity\BasicEntityPersister->generateFilterConditionSQL(Object(MailPoetVendor\Doctrine\ORM\Mapping\ClassMetadata), 't0')
#2 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php(478): MailPoetVendor\Doctrine\ORM\Persisters\Entity\BasicEntityPersister->getSelectSQL(Array, NULL, NULL, NULL, NULL, NULL)
#3 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/EntityRepository.php(79): MailPoetVendor\Doctrine\ORM\Persisters\Entity\BasicEntityPersister->loadAll(Array, NULL, NULL, NULL)
#4 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/EntityRepository.php(74): MailPoetVendor\Doctrine\ORM\EntityRepository->findBy(Array)
#5 /htdocs/wp-content/plugins/mailpoet/lib/Doctrine/Repository.php(84): MailPoetVendor\Doctrine\ORM\EntityRepository->findAll()
#6 /htdocs/wp-content/plugins/mailpoet/lib/Settings/SettingsController.php(147): MailPoet\Doctrine\Repository->findAll()
#7 /htdocs/wp-content/plugins/mailpoet/lib/Settings/SettingsController.php(37): MailPoet\Settings\SettingsController->ensureLoaded()
#8 /htdocs/wp-content/plugins/mailpoet/lib/Config/Hooks.php(140): MailPoet\Settings\SettingsController->get('subscribe', Array)
#9 /htdocs/wp-content/plugins/mailpoet/lib/Config/Hooks.php(121): MailPoet\Config\Hooks->setupSubscriptionEvents()
#10 /htdocs/wp-content/plugins/mailpoet/lib/Config/Initializer.php(342): MailPoet\Config\Hooks->init()
#11 /htdocs/wp-includes/class-wp-hook.php(324): MailPoet\Config\Initializer->pluginsLoaded('')
#12 /htdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#13 /htdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#14 /htdocs/wp-settings.php(555): do_action('plugins_loaded')
#15 /htdocs/wp-config.php(85): require_once('/htdocs/wp-sett...')
#16 /htdocs/wp-load.php(50): require_once('/htdocs/wp-conf...')
#17 /htdocs/wp-blog-header.php(13): require_once('/htdocs/wp-load...')
#18 /htdocs/index.php(17): require('/htdocs/wp-blog...')
#19 {main}
thrown in /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/EntityManager.php on line 464