VMware sdk problem

Steps to reproduce:

1. We getting error its called "Unexpected server error." when we trying to add ESXi hosts or VMware Hypervisor hosts.
2. We need to add macros for login host so we added $USER, $PASSWORD and $URL.
3. Then we getting the error while using url with http or https.
4. We already tried $VMWARE.URL but still not working.
5. In conclusion, we add hosts without http or https, I mean only ip address then /sdk. In this time we getting error its called "Couldn't resolve host name" and "Received response has no valid XML data."