No file on this host
The folder for this preview holds HTML, a stylesheet, a logo, a favicon, two photographs, a robots file, and a sitemap. That list is the whole publish. An installable package is not in it.
A not-found page is what an unknown path returns, including a path that looks like a package name. Guessing the path does not create the file.
This is a deliberate boundary. A download query still gets a page, and the page says the file is elsewhere, through the outbound button, not here.
More from the same capture
An inventory is a better refusal than a slogan. HTML pages, one stylesheet, the logo, the favicon, two photographs, robots, sitemap, and the local server script. A package would be obvious in that list. It is not there.
The server script is not a product. Requests for it are hidden and answered with the not-found page.