Notice: file_get_contents(): Read of 8192 bytes failed with errno=12 Cannot allocate memory in /home/solart1/public_html/wp-content/plugins/mailpoet/lib/Doctrine/MetadataCache.php on line 38

Fatal error: Uncaught MailPoetVendor\Doctrine\ORM\Mapping\MappingException: No identifier/primary key specified for Entity "MailPoet\Entities\NewsletterEntity". Every Entity must have an identifier/primary key. in /home/solart1/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Mapping/MappingException.php:30 Stack trace: #0 /home/solart1/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php(326): MailPoetVendor\Doctrine\ORM\Mapping\MappingException::identifierRequired() #1 /home/solart1/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php(178): MailPoetVendor\Doctrine\ORM\Mapping\ClassMetadataInfo->validateIdentifier() #2 /home/solart1/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php(170): MailPoetVendor\Doctrine\ORM\Mapping\ClassMetadataFactory->validateRuntimeMetadata() #3 /home/solart1/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/persistence/src/Persistence/Mapping/AbstractClassMetadataFactory.php(180): MailPoetVendor\Doctrine\ORM\Mapping\ClassMetadataFactory->doLoadMetadata() #4 /home/solart1/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/persistence/src/Persistence/Mapping/AbstractClassMetadataFactory.php(108): MailPoetVendor\Doctrine\Persistence\Mapping\AbstractClassMetadataFactory->loadMetadata() #5 /home/solart1/public_html/wp-content/plugins/mailpoet/lib/Doctrine/TablePrefixMetadataFactory.php(44): MailPoetVendor\Doctrine\Persistence\Mapping\AbstractClassMetadataFactory->getMetadataFor() #6 /home/solart1/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/EntityManager.php(143): MailPoet\Doctrine\TablePrefixMetadataFactory->getMetadataFor() #7 /home/solart1/public_html/wp-content/plugins/mailpoet/lib/Doctrine/Repository.php(36): MailPoetVendor\Doctrine\ORM\EntityManager->getClassMetadata() #8 /home/solart1/public_html/wp-content/plugins/mailpoet/lib/Newsletter/NewslettersRepository.php(35): MailPoet\Doctrine\Repository->__construct() #9 /home/solart1/public_html/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(3966): MailPoet\Newsletter\NewslettersRepository->__construct() #10 /home/solart1/public_html/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(4126): MailPoetGenerated\FreeCachedContainer->getNewslettersRepositoryService() #11 /home/solart1/public_html/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(4853): MailPoetGenerated\FreeCachedContainer->getWelcomeSchedulerService() #12 /home/solart1/public_html/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(2688): MailPoetGenerated\FreeCachedContainer->getWPService() #13 /home/solart1/public_html/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(2592): MailPoetGenerated\FreeCachedContainer->getPopulatorService() #14 /home/solart1/public_html/wp-content/plugins/mailpoet/generated/FreeCachedContainer.php(2655): MailPoetGenerated\FreeCachedContainer->getActivatorService() #15 /home/solart1/public_html/wp-content/plugins/mailpoet/vendor-prefixed/symfony/dependency-injection/Container.php(122): MailPoetGenerated\FreeCachedContainer->getInitializerService() #16 /home/solart1/public_html/wp-content/plugins/mailpoet/vendor-prefixed/symfony/dependency-injection/Container.php(110): MailPoetVendor\Symfony\Component\DependencyInjection\Container->make() #17 /home/solart1/public_html/wp-content/plugins/mailpoet/lib/DI/ContainerWrapper.php(39): MailPoetVendor\Symfony\Component\DependencyInjection\Container->get() #18 /home/solart1/public_html/wp-content/plugins/mailpoet/mailpoet_initializer.php(88): MailPoet\DI\ContainerWrapper->get() #19 /home/solart1/public_html/wp-content/plugins/mailpoet/mailpoet.php(194): require_once('/home/solart1/p...') #20 /home/solart1/public_html/wp-settings.php(473): include_once('/home/solart1/p...') #21 /home/solart1/public_html/wp-config.php(96): require_once('/home/solart1/p...') #22 /home/solart1/public_html/wp-load.php(50): require_once('/home/solart1/p...') #23 /home/solart1/public_html/wp-blog-header.php(13): require_once('/home/solart1/p...') #24 /home/solart1/public_html/index.php(17): require('/home/solart1/p...') #25 {main} thrown in /home/solart1/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Mapping/MappingException.php on line 30