In the issue are two different issues reported. Which one is this fixing?
Could you please explain how to reproduce the issue you are solving here?

hi @tinect,

the PR solves both problems - for some reason the route will not be resolved if there is a .png or .something at the end - in these cases the backend says the route could not be found, and the frontend shows an image placeholder without QR code data.

I'm not sure if this is a problem on the web server side, or on the Shopware side (Apache2 & Nginx both give the same result) with a Shopware version v6.6

Sadly, I am unable to reproduce these issues in Shopware 6.6. :-(

Hi @WorksDev
I will be closing this PR as this issue cannot be reproduced and it sounds to be an issue with the configuration of your webserver. Symfony/Shopware should be able to handle any routes, whatever the extension is in the path.