I don’t know what changed, but I have gone a slightly different route.
The FE (including admin) is hosted on Vercel, but the database and other assets are hosted elsewhere.
So, upon file upload I’ll be saving the file locally (Vercel server, I hope) then creating another Fetch request sending the file to the other server.
I have a POC working locally, and will be updating the code to make it more dynamic and maintain the user’s uploaded file name.
Eventually I will likely add S3 or Vercel’s Blob support. I just haven’t gotten around to that w/ this project yet.
We can close this / mark as resolved.