I'm looking for a way to avoid passing the query string of a URL on to my server. For example, Facebook adds "fbclid" to every link that's outbound from Facebook. I need a way to ignore that query string.

I'm running a very old, proprietary software that can't interpret those Facebook query strings and returns 404 errors as a result. The software will be retired in 2020, but I need a solution until that time. Any ideas are appreciated! I'm hoping there's some way to achieve this through Dynu or by changing some other setting related to my domain. Thanks!