Autodesk Forge "View BIM 360 & Fusion models" sample

I'm just starting with Autodesk Forge, and I'm trying to follow "View BIM 360 & Fusion models" sample on https://learnforge.autodesk.io/#/tutorials/viewhubmodels.

The tree correctly shows the hubs, projects, files and versions.

However, when I pick some version the viewer don't show that file.

I also tried to download directly from GitHub (https://github.com/Autodesk-Forge/learn.forge.viewhubmodels/tree/net), but same thing happens...

Tried with .rvt and .pdf.

Any kind of configuration that I'm missing?

** Update **:

I've debug the code and found:

DataManagementController -> GetItemVersions gets urn value;
for that versions, launchViewer(urn, viewableId) gets "Error: 403 (Unauthorized)"
viewableId is undefined

I am looking at .rvt and .pdf files...

I am missing any configuration? Any clue?

Regards António

Solution

Solved! The Viewer needs access to Model Derivative API. Ensure it is properly configured on your Forge API.