Please accept my sincere apologies if my "issue" here is misplaced or does not make sense to you. I just wanted to let you/other developers know that there might be an issue with that source (not with Pi-Hole, as I mentioned initially). So I do not expect help here, but rather wanted to make this note. If it is only a temporarily dead link, it does not matter. Well, maybe it does not even matter if it remains dead, as Pi-Hole does not care and continues functioning. I vaguely remember a discussion about other sources not working for a longer time, and if I remember correctly, it was then decided to remove them from Pi-Hole. Again, if my post here is of no concern, please forgive me to have unnecessarily taken time (I mean this earnestly).