M3U Playlists in Media Browser

Right, i think i know where’s the problem, or might be.
I’ve got my audio and m3u file in media folder, so:1
files: samochod.m3u and samochod.mp3 are in media/
My m3u inside is simple:

#EXTM3U
#EXTINF:990,Samochod
samochod.mp3

But when i go to dev tools > states, i’ve got this:

Which asks for location media/local/samochod.m3u, what is incorrect (i think) and is it possible that auth token is generated for wrong path or something? Is that a bug in HA or we all are doing something wrong?