I have a quarto site that successfully deploys like this:

rsconnect::deploySite()

In this scenario, the rendered site is deployed (client side rendered)

If i attempt to render on the server:

rsconnect::deploySite(render="server")

the result is that the source code is pushed, but it is not rendered, resulting in the app displaying the source code:

I suspect the issue is that the app_mode is set to static but should be set to quarto-static