rw72 - 2019-12-19

Hello,
i had 2 devices where add with a sh script.
And i had 2 scripts for unmount.
One unmount are correct, but the second i became the error in the image.
Both devices are not empty and the error every time.
My Script to mount:
veracrypt --mount /dev/sdc1 --slot=2 /media/veracrypt2
Unmount:
veracrypt --dismount /media/veracrypt2
What is my error?
Best regards
Ralf