first of all thanks,
I used "Tvheadend" only in "Docker" everything is pre-installed, this is not the case on "Debian".
It's good I was able to get the EPGs of the existing grabbs, but what about "XMLTV: XML file grabber", "XMLTV: XMLTV URL grabber" and "XMLTV: WebGrab+Plus XML file grabber" ?