Problem - Error in registering service in café host

Hello guys! How are you?

I am trying to put a vRA server in Usage Meter 3.5 and during the process I am receiving the follow message:

Error in registering service in café host <vRA Appliance Hostname>: java.lang.IllegalArgumentException: certificate must not be null.

I search everywhere, but did not find any answer.

Has anyone ever had this problem?

Thank you very much!!