0 channels found using IPTV Automatic Network

I'm using Tvheadend 4.3.0~pre+202107292245-0~built202107300132~git23754f9a6~ubuntu18.04.1 and when I add an M3u list like for example this one (https://i.mjh.nz/PlutoTV/all.m3u8) not muxes nor services are found. It's almost happen with any list and I'm not sure if it's a problem of my setup or just is the expected behavior and these formats are not compatible.

So I would appreciate any help that you could provide me to try to fix the problem.