I tried clearing the NVRAM multiple times and looked at past posts to isolate past occurrences. Pretty sure it has to be an issue. I'm on a R7000.
root@unknown:/tmp/home/root# vi /etc/fstab
root@unknown:/tmp/home/root# nvram setfile2nvram /etc/fstab
usage: nvram [get name] [set name=value] [unset name] [show] [commit] [save] [restore] [erase] …