Unable to create VM and Services

I have installed nebula on Ubuntu 18.04. I am experiencing the issue while creating services and VM. Error as below:
[one.document.info] Error getting document [0].

Attached is the screenshot for reference. Please help on this.

You need to define first a service template like you do with VMs templates. Once you have the service template, you can proceed to instantiate it. More information on that here.

Thank you very much. I got the point.