I am using Forge Viewer, tested with both Viewer version 2.17 and 4.0, but cannot view DWG files. Those same DWG files can view in Autodesk Viewer (https://viewer.autodesk.com/). I checked all the files were uploaded successfully to my Forge bucket and they return appropriate URNs. However the Viewer returns error 404 (not found) at https://developer.api.autodesk.com/derivativeservice/v2/manifest/{{urn}}
My app can view DWF files perfectly, but DWG files cannot. I don't know what is the difference since they use the same code to upload and view.
I checked the Forge API was updated to use hub, my code uses only storage location. I don't know it will make something difference or not.
Thank you.