Fatal error: Uncaught Error: Class "MailPoetVendor\Doctrine\ORM\Id\AbstractIdGenerator" not found in /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Id/IdentityGenerator.php:7
Stack trace:
#0 /htdocs/wp-content/plugins/all-in-one-seo-pack/vendor/composer/ClassLoader.php(576): include()
#1 /htdocs/wp-content/plugins/all-in-one-seo-pack/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}('/htdocs/wp-cont...')
#2 [internal function]: Composer\Autoload\ClassLoader->loadClass('MailPoetVendor\\...')
#3 /htdocs/wp-content/plugins/mailpoet/lib/Doctrine/MetadataCache.php(38): unserialize('O:49:"MailPoetV...')
#4 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/cache/lib/Doctrine/Common/Cache/CacheProvider.php(24): MailPoet\Doctrine\MetadataCache->doFetch('[MailPoet__Enti...')
#5 /htdocs/wp-content/plugins/mailpoet/lib/Doctrine/PSRMetadataCache.php(30): MailPoetVendor\Doctrine\Common\Cache\CacheProvider->fetch('MailPoet__Entit...')
#6 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/persistence/src/Persistence/Mapping/AbstractClassMetadataFactory.php(103): MailPoet\Doctrine\PSRMetadataCache->getItem('MailPoet__Entit...')
#7 /htdocs/wp-content/plugins/mailpoet/lib/Doctrine/TablePrefixMetadataFactory.php(44): MailPoetVendor\Doctrine\Persistence\Mapping\AbstractClassMetadataFactory->getMetadataFor('MailPoet\\Entiti...')
#8 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/EntityManager.php(143): MailPoet\Doctrine\TablePrefixMetadataFactory->getMetadataFor('MailPoet\\Entiti...')
#9 /htdocs/wp-content/plugins/mailpoet/lib/Doctrine/Repository.php(36): MailPoetVendor\Doctrine\ORM\EntityManager->getClassMetadata('MailPoet\\Entiti...')
#10 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(4908): MailPoet\Doctrine\Repository->__construct(Object(MailPoetVendor\Doctrine\ORM\EntityManager))
#11 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(4898): MailPoetGenerated\FreeCachedContainer->getSettingsRepositoryService()
#12 /htdocs/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(2633): MailPoetGenerated\FreeCachedContainer->getSettingsController2Service()
#13 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/symfony/dependency-injection/Container.php(122): MailPoetGenerated\FreeCachedContainer->getInitializerService()
#14 /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/symfony/dependency-injection/Container.php(110): MailPoetVendor\Symfony\Component\DependencyInjection\Container->make('MailPoet\\Config...', 1)
#15 /htdocs/wp-content/plugins/mailpoet/lib/DI/ContainerWrapper.php(39): MailPoetVendor\Symfony\Component\DependencyInjection\Container->get('MailPoet\\Config...')
#16 /htdocs/wp-content/plugins/mailpoet/mailpoet_initializer.php(89): MailPoet\DI\ContainerWrapper->get('MailPoet\\Config...')
#17 /htdocs/wp-content/plugins/mailpoet/mailpoet.php(194): require_once('/htdocs/wp-cont...')
#18 /htdocs/wp-settings.php(526): include_once('/htdocs/wp-cont...')
#19 /htdocs/wp-config.php(85): require_once('/htdocs/wp-sett...')
#20 /htdocs/wp-load.php(50): require_once('/htdocs/wp-conf...')
#21 /htdocs/wp-blog-header.php(13): require_once('/htdocs/wp-load...')
#22 /htdocs/index.php(17): require('/htdocs/wp-blog...')
#23 {main}
thrown in /htdocs/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Id/IdentityGenerator.php on line 7