Created attachment 211043 [details]
The certificate is valid from Mon 23 Dec 07:17:16 2019 (Sun 22 Dec 20:17:16 2019 GMT)
The certificate expires on Sun 22 Mar 07:17:16 2020 (Sat 21 Mar 20:17:16 2020 GMT)
See attached screenshot. I'm not sure why you think it has expired?
I'm getting a different one from here. See attached...
Created attachment 211044 [details]
Probably because a mirror site misconfigured, can you provide which IP you were redirected to by download.freebsd.org?
➜ ~ ping download.freebsd.org
PING download.geo.freebsd.org (22.214.171.124): 56 data bytes
64 bytes from 126.96.36.199: icmp_seq=0 ttl=53 time=43.781 ms
64 bytes from 188.8.131.52: icmp_seq=1 ttl=53 time=42.476 ms
nginx on 184.108.40.206 (ftp0.cyb.freebsd.org) restarted.
Thanks, that fixed it.