I've been running into this with 12.0-RELEASE to 12.1-RELEASE and freebsd-update
After a lot of frustration, I've had some success with (using the repo of your architecture and quarterly/latest choice)
Code:fetch https://pkg.freebsd.org/FreeBSD:12:amd64/latest/All/pkg-1.14.2.txz sudo pkg add -f pkg-1.14.2.txz
pkg-add(8) suggests that
Code:sudo pkg add -f https://pkg.freebsd.org/FreeBSD:12:amd64/latest/All/pkg-1.14.2.txz
would work as a one-liner, though I have
notnow tried it successfully.
Thank you in advance.
I have a freebsd box last active in 2019.04 12.0R, your solution help me a lot, it working now.