Fatal error: Uncaught MailPoetVendor\Doctrine\ORM\Mapping\MappingException: No identifier/primary key specified for Entity "MailPoet\Entities\StatsNotificationEntity". Every Entity must have an identifier/primary key. in /home/dhandlib/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Mapping/MappingException.php:28 Stack trace: #0 /home/dhandlib/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php(325): MailPoetVendor\Doctrine\ORM\Mapping\MappingException::identifierRequired('MailPoet\\Entiti...') #1 /home/dhandlib/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php(170): MailPoetVendor\Doctrine\ORM\Mapping\ClassMetadataInfo->validateIdentifier() #2 /home/dhandlib/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php(162): MailPoetVendor\Doctrine\ORM\Mapping\ClassMetadataFactory->validateRuntim in /home/dhandlib/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Mapping/MappingException.php on line 28