any change in vCloud Director are not relected in the Chargeback hierarchy

In Chargeback hierarchy, it still shows old vCloud Director structure, basically, any new organization, or VMs are not shown in Chargeback hierarchy. how to fix it?

In the "System Health", everything is fine (green).

In vCloud Director log, we could see that chargeback user login to it very 5 minutes.

We could still generate reports for any existing Org or VMs in chargeback hierarchy for vCloud Director.

In Chargeback vCloud Director DataCollector error log, we see following error every 5 minutes:

"ERROR [eventProcessorTimer] [jobs.EventProcessorJob] 7904: Chargeback API failed exception caught while running com.vmware.chargeback.integration.vcloud.jobs.EventProcessorJob 

com.vmware.chargeback.integration.commons.exception.ChargebackApiFailedException: Unmarshalling error

..........................

Caused by: javax.xml.bind.UnmarshalException

- with linked exception:

[org.xml.sax.SAXParseException: Character reference "&#8" is an invalid XML character.]

"

not sure whether it is the root cause or not.

Thank you!