SnapRAID plugin error: cannot create directory /tmp/snapraid

I upgraded from 3.x to 4.x recently and just received a warning email from OMV about the status of SnapRAID. It says the following:

Cron <root@nas2> /var/lib/openmediavault/cron.d/userdefined-5f6fd87f-bd21-48a6-bde1-4a14016699e0 | mail -E -s "Cron - SnapRAID - Scheduled diff." -a "From: Cron Daemon <root>" root >/dev/null 2>&1


mkdir: cannot create directory ‘/tmp/snapraid’: File exists

Do I need to do anything to fix this? I thought /tmp folder is cleared on each reboot. Do I need to remove existing /tmp/snapraid?

If I get this error message, does that mean SnapRAID fails to run?

Problem solved. I accidentally scheduled two cron jobs for SnapRAID that runs at same time.