We have been receiving an error intermittently during the nightly system update on two cPanel servers:

I have run the command /usr/local/cpanel/scripts/rpmup manually and it ran successfully today with no errors.
What is the location of the update log file so I can determine why this script is intermittently failing?

I have run the command /usr/local/cpanel/scripts/rpmup manually and it ran successfully today with no errors.
What is the location of the update log file so I can determine why this script is intermittently failing?