Tvheadend

when I enable the "Internal: XMLTV: Italy" I get the following log:

@017-06-21 12:54:03.257 spawn: Executing "/usr/bin/tv_grab_it"
2017-06-21 12:54:03.517 spawn: using config filename /home/hts/.xmltv/tv_grab_it.conf
2017-06-21 12:54:07.226 spawn: getting list of channels: ######***Channel |Sky Cinema Uno HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:07.363 spawn: Channel |Discovery 1| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:07.380 spawn: **Channel |Dove| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:09.531 spawn: **Channel |Sky Sport Mix HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:09.551 spawn: **Channel |JJuventus TV| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:09.552 spawn: **Channel |Roma TV| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:09.553 spawn: **Channel |Bike Channel HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:09.557 spawn: **Channel |Sportitalia| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:09.558 spawn: **Channel |Rai Sport| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:09.558 spawn: **Channel |Milan TV HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:09.560 spawn: **Channel |Torino Channel| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:12.680 spawn: **Channel |Reteconomy| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:12.682 spawn: **Channel |TRM h24| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:12.692 spawn: **Channel |RT Doc HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:13.814 spawn: **Channel |Paw Patrol| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:13.818 spawn: **Channel |Nickelodeon +1| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:13.820 spawn: **Channel |Cartoon Network HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:13.826 spawn: **Channel |Boomerang +1| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:13.834 spawn: **Channel |TeenNick| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.098 spawn: **Channel |Sky Atlantic +1 HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.109 spawn: **Channel |CI Crime Investigation HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.110 spawn: **Channel |Blaze HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.112 spawn: **Channel |TV8| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.118 spawn: **Channel |DMAX HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.121 spawn: **Channel |Fox Crime +2| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.122 spawn: **Channel |NOVE HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.124 spawn: **Channel |Deejay TVNOVE| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.126 spawn: **Channel |Sky UnoHD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.249 spawn: **Channel |Primafila 5 HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.256 spawn: **Channel |Primafila 9 HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.260 spawn: **Channel |Primafila 11 HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:18.263 spawn: **Channel |Primafila 13 HD| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:20.432 spawn: **Channel |TV8 DTT| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:20.433 spawn: **Channel |NOVE DTT| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:20.434 spawn: **Channel |Rai 4 DTT| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:20.444 spawn: **Channel |GIALLO DTT| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:20.449 spawn: **Channel |Sky Tg24 DTT2| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:20.449 spawn: **Channel |DMAX DTT| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:20.450 spawn: **Channel |Focus DTT| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:20.451 spawn: **Channel |Rai Sport DTT| for 'skylife' is not in channel_ids, should be updated.
2017-06-21 12:54:23.938 spawn: ############*Channel |Premium Sport 2| for 'mediaset_guidatv' is not in channel_ids, should be updated.
2017-06-21 12:54:23.938 spawn: **Channel |Premium Stories| for 'mediaset_guidatv' is not in channel_ids, should be updated.
2017-06-21 12:54:23.938 spawn: **Channel |Premium Cinema HD| for 'mediaset_guidatv' is not in channel_ids, should be updated.
2017-06-21 12:54:23.939 spawn: **Channel |Premium Cinema Energy HD| for 'mediaset_guidatv' is not in channel_ids, should be updated.
2017-06-21 12:54:23.941 spawn: **Channel |Premium Action HD| for 'mediaset_guidatv' is not in channel_ids, should be updated.
2017-06-21 12:54:23.943 spawn: **Channel |Premium Crime HD| for 'mediaset_guidatv' is not in channel_ids, should be updated.
2017-06-21 12:54:23.970 spawn: ################################
2017-06-21 12:54:23.972 spawn: config file /home/hts/.xmltv/tv_grab_it.conf is empty, please delete and run me with --configure
2017-06-21 12:54:23.977 xmltv: /usr/bin/tv_grab_it: grab took 21 seconds
2017-06-21 12:54:23.977 xmltv: /usr/bin/tv_grab_it: parse took 0 seconds
2017-06-21 12:54:23.977 xmltv: /usr/bin/tv_grab_it: channels tot= 0 new= 0 mod= 0
2017-06-21 12:54:23.977 xmltv: /usr/bin/tv_grab_it: brands tot= 0 new= 0 mod= 0
2017-06-21 12:54:23.977 xmltv: /usr/bin/tv_grab_it: seasons tot= 0 new= 0 mod= 0
2017-06-21 12:54:23.977 xmltv: /usr/bin/tv_grab_it: episodes tot= 0 new= 0 mod= 0
2017-06-21 12:54:23.977 xmltv: /usr/bin/tv_grab_it: broadcasts tot= 0 new= 0 mod= 0

@

As you can see, my epg list is empty and tvheadend tells me to configure the /home/hts/.xmltv/tv_grab_it.conf

What do I have to configure???