I've run into an error where one of my users can't login as the domain administrator for their website. They get the following error.
I can log in under the root account without issue.
Also, I recently migrated their domain over from another Virtualmin server using the back restore utility provided by virtualmin so that could be the cause.
I've heard of a chroot init scrip but I can't find it to compare this particular user against a known working copy.