Being hammered - "rsyslog"?

SYSTEM INFORMATION
OS type and version Ubuntu Linux 22.04.5
Usermin version 2.102
Virtualmin version 7.30.2
Theme version 21.20.7
Nginx version 1.18.0
Package updates All installed packages are up to date

while just trying to find out why a VS has slowed down to almost a standstill… I log in and am immediately (and surprisingly) taken to Webmin System -> System Logs which is filling up ar=t a scary rate with

rsyslogd[614]: action ‘action-5-builtin:omfile’ suspended (module ‘builtin:omfile’), retry 0. There should be messages before this one giving the reason for suspension. [v8.2112.0 try https://www.rsyslog.com/e/2007 ]

what is module “builtin:omfile”?

maybe this will help ?

interesting, but why has it happened all of a sudden?