No, there really isn’t. Other people here have created github repos and posted the link here, but that’s about it.
If you look at your runserver console, you’ll see output that looks like this:
INFO "GET /admin/ HTTP/1.1" 200 50505
INFO "GET /static/admin/css/fonts.css HTTP/1.1" 200 423
What you should see are lines with the ViewListing/nnn as the url (where nnn is the Listing_id). The three digit number after the “HTTP/1.1” is the http return code - a 200 means everything worked. The number after that are the number of octets returned from the server. Anything else indicates an error.
If you can copy/paste some of your console log showing those URLs and the return code, that would help.
But again - is the link for ViewListing something like a menu entry directly on the page, or is it an AJAX request?
(There are at least two errors that I see in the view so far, but I can’t address them until I understand how that view is being used.)