I'm trying to create persistence on a live usb drive. This worked in December but now it isn't. How is it different from than when it worked?

usb=/dev/sdc

 sudo fdisk $usb <<< $(printf "n\np\n\n\n\nw")
 usb=/dev/sdc

 sudo mkfs.ext4 -L persistence ${usb}3
 usb=/dev/sdc
 sudo mkdir -p /mnt/my_usb
 sudo mount ${usb}3 /mnt/my_usb
 echo "/ union" | sudo tee /mnt/my_usb/persistence.conf
 sudo umount ${usb}3


--

:-)~MIKE~(-: