我在尝试付款请求时遇到此错误。我安装了JMS和doctrine，但我认为它不能正常工作？
AnnotationException in AnnotationException.php line 54:
[Semantical Error] The annotation "@JMS\Serializer\Annotation\AccessType" in
class PHPSC\PagSeguro\Requests\Checkout\Checkout does not exist, or could not
be auto-loaded.