updating initramfs error: couldn't resolve device

earlier, i was doing some updates to my nvidia drivers (apt-get install nvidia-xconfig) and was greeted with the following error:

root@SkadooOfSkadae:/# update-initramfs -u
update-initramfs: Generating /boot/initrd.img-4.18.0-kali2-amd64
cryptsetup: ERROR: Couldn't resolve device
UUID=35249401-3bb4-4b63-ad17-aef6b33eda0e
W: initramfs-tools configuration sets RESUME=UUID=35249401-3bb4-4b63-ad17-aef6b33eda0e
W: but no matching swap device is available.
I: The initramfs will attempt to resume from /dev/dm-1
I: (/dev/mapper/sda5_crypt)
I: Set the RESUME variable to override this.


It's probably really obvious but I have no idea what to do, i've tried to go to /dev/dm-1 however I'm unable to open that file type.