If one of the URL params is invalid (so string instead of int) we would receive a 500 exception. It would be a good practice to throw 404 in every case, like in the case of previewing content in the Back Office or similar when one param doesn't validate.

Steps to reproduce:

1. Go to any of the following URLs:

   /content/download/foo/bar

   /content/download/123aaa/bar

Result:
500 exception is thrown.

Expected result:
404 exception is thrown.