Error cPanel version change from “11.102.0.18” to “11.104.0.4” failed during updatenow

SOLVED: To work around this I've manually set an update mirror:

echo "HTTPUPDATE=208.74.123.62" >> /etc/cpsources.con

Reference: https://support.cpanel.net/hc/en-us/articles/5630471484055-How-can-I-specify-a-custom-cPanel-update-mirror-

Procedure

• Identify a list of mirrors available with the command:

host httpupdate.cpanel.net

• Edit or create file /etc/cpsources.conf with the following contents:

HTTPUPDATE=$IP

Note: Replace $IP with a desired IP from the first command.

• Run the update command to retrieve updates from the custom defined mirror:

/scripts/upcp