that’s the thing… plus indeed… in case the AUR helper itself needs to get rebuild. You can not use the AUR helper to do so. One time in 4 year you will have to do something intimidating like using 3 commands…
I see already like 4 topics with 10001 users panicking about the same little issue.
Let me rethink that we add AUR helper to the repo 
And i was already adding a topic with the hint and solution:
https://forum.endeavouros.com/t/pacman-7-0-0-r3-g7736133-1-update/
It is also here:
and indeed you will get the info on welcome application:
