The attempt to wipe old keys on the first run of mortar causes a non critical issue.

[noahbliss]

mortar/3-tpm2clevis-prepluksandinstallhooks.sh

Line 52 in 452eff8

cryptsetup luksKillSlot --key-file tmpramfs/user.key "$CRYPTDEV" "$SLOT"

On first run, there is no old key to wipe, this causes cryptsetup to panic. This does not hinder the remaining execution of the script or cause practical malfunction, but doesn't look very nice.