Exception trace:
 () at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/MappingException.php:86
 Doctrine\Common\Persistence\Mapping\MappingException::invalidMappingFile() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/Driver/FileDriver.php:117
 Doctrine\Common\Persistence\Mapping\Driver\FileDriver->getElement() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/Driver/YamlDriver.php:55
 Doctrine\ORM\Mapping\Driver\YamlDriver->loadMetadataForClass() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/Driver/MappingDriverChain.php:102
 Doctrine\Common\Persistence\Mapping\Driver\MappingDriverChain->loadMetadataForClass() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php:116
 Doctrine\ORM\Mapping\ClassMetadataFactory->doLoadMetadata() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php:332
 Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory->loadMetadata() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php:216
 Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory->getMetadataFor() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php:115
 Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory->getAllMetadata() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/orm/lib/Doctrine/ORM/Tools/SchemaValidator.php:69
 Doctrine\ORM\Tools\SchemaValidator->validateMapping() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/orm/lib/Doctrine/ORM/Tools/Console/Command/ValidateSchemaCommand.php:62
 Doctrine\ORM\Tools\Console\Command\ValidateSchemaCommand->execute() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/doctrine/doctrine-bundle/Command/Proxy/ValidateSchemaCommand.php:50
 Doctrine\Bundle\DoctrineBundle\Command\Proxy\ValidateSchemaCommand->execute() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/symfony/console/Command/Command.php:259
 Symfony\Component\Console\Command\Command->run() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/symfony/console/Application.php:860
 Symfony\Component\Console\Application->doRunCommand() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/symfony/console/Application.php:192
 Symfony\Component\Console\Application->doRun() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/symfony/framework-bundle/Console/Application.php:98
 Symfony\Bundle\FrameworkBundle\Console\Application->doRun() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/vendor/symfony/console/Application.php:123
 Symfony\Component\Console\Application->run() at /Users/intern/Sites/sylius/src/Sylius/Bundle/ResourceBundle/test/app/console:24