crontab: crontabs/USERNAME: rename: Operation not permitted

I migrated from another virtualmin, but my crontab isn’t working for this user . I tried to edit it with crontab -e to add some logging, but when I did I got the error

crontab: installing new crontab
crontab: crontabs/USERNAME: rename: Operation not permitted
crontab: edits left in /tmp/crontab.V6vGXh/crontab

I tried using the virtualmin feauter that verifies and fixes permissions for that account, but it didn’t effect the crontab.

Any Ideas? I’m on Ubuntu 16 LTS .