For file sharing app generates qr code. This is handy when the qr code contain propper URL address which is decoded as url and can be then opened directly in browser.
If QR code is not decoded ad url, then is useless. I tested with two proven qr code readers from F-droid repository. My conclusion, qr code have to be reworked.
Added schrenshoots with annotations. Picture can show more than saying 1000 words
https://mega.nz/file/zLBB1T6T#JmEJAAe67g2ZmPEoi053o1GodMjn6eKh0MUmQbAFPnE