Unable to system upgrade

Hi OpenBSD support,



I am new user and learning to use OpenBSD. I am unable to determine how to
resolve the below issue. Unable to find information in internet. I am
hoping for some assistance from experienced users or someone have resolved
the similar issue.



My NUC box is running OpenBSD 6.8 in amd64. I am upgrading from 6.8 to 6.9
then 7.0. Not sure if this can do from 6.8 to 7.0?



sysupgrade -r

Fetching from https://cdn.openbsd.org/pub/OpenBSD/6.9/amd64

TLS handshake failure: ocsp verify failed: ocsp response not current



I am not sure how to resolve this issue. I changed install URL to try at
different site in /etc/installurl file from
https://cdn.openbsd.org/pub/OpenBSD to
https://mirror.aarnet.edu.au/pub/OpenBSD



sysupgrade -r

Fetching from https://mirror.aarnet.edu.au/pub/OpenBSD/ /6.9/amd64/

Invalid signing key



When i rerun with https://cdn.openbsd.org/pub/OpenBSD/6.9/amd64

sysupgrade -r

SHA256.sig 100% |**** etc. 2144 00:00

Signature Verified

TLS handshake failure: ocsp verify failed: ocsp response not current





Happy to consult



Thanks



Jason