Your app requires mongodb and whtanot. I don’t have these prerequisites handy. At a glance, I see your matcher doesn’t have wildcard * at the end, which means it’ll only match and handle /quasarapp, but nothing under /quasarapp/assets*.
Also, your app has to know that it’s served on a sub-path.
Lastly, it’s not clear if the shared log is from the browser or your own app or something else.