I followed the steps per listed on their website, but my VS Code threw the following error, and when I went to the localhost it appeared as such (with no where to upload my own .rvt files)
Reference Application Local Host
VS Code error message
Note: I fixed the directory to look like this, but it still isn't showing me the upload portal to include my own .RVT file. Updated VS Code .env
I was following the directions exactly as they were laid out on the Forge Data Visualization Reference Application introduction, and it wasn't giving me the result that I needed and it didn't allow me to upload my own model. I tried to do these steps through the Mac OS Monterey Terminal as well as through the VS Code Terminal dozens of times with slightly different changes each time, and none of these worked. So instead, I downloaded iTerm2 and tried again, and it worked PERFECTLY!