Why I cannot see my library in TV ?

Hello,
my PMS scans all my video files (movies, tv show, camera footage) and catalogises them into library correctly (I can see them in web gui and in BubbleUPNP). When I open UPNP/DLNA devices on my LG TV it shows PMS but when I try to open it there is nothing (with text - this folder seems to be empty - in my language).
If I try to open my library in BubleUPNP (android app) I see all my files correctly and can play them - I can play them even on the mentioned TV (if I chose it as renderer in the BubbleUPNP).
The same setup worked before and my TV was albe to browse PMS Library without problem. Only one thing happend - update of my debian server and PMS itself.
There is nothing in logs, no errors, just regular stuff. Am I doing something wrong ? Should I setup something diferrently ?
Thanks for help