Encounter "Unauthorized" error when testing locally without internet connection

Does RhinoCompute require an active internet connection in order to authorize the tokens ?

Everything works when I am connected to the internet (tested on both URLs http://compute.rhino3d.com/ and localhost)

System.Net.WebException: The remote server returned an error: (401) Unauthorized.

I assume it has to do with Rhino WIP licensing.
It may sound insane but I’d like to have a local rhinocompute instance, which has a full perpetual license, for intranet webapp development (no internet)

Is there a way to resolve this ?