freebsd-update problem

[Carmel]

I recently installed FreeBSD 11-0 current on a new machine. Now, when I
attempt to run "freebsd-update fetch", I receive the following error
message.

src component not installed, skipped
Fetching public key from update5.freebsd.org ... failed
(above repeated several times with different URLs)
No mirrors remaining, giving up.

What am I doing wrong?

-- 
Carmel