Can't mount ZFS pool, only 300kb filesystem that I don't want

I'm not even sure exactly what the issue is, I started by deleting some snapshots through the zfs destroy command and then I was trying to delete this extra filesystem that's appeared.

However I couldn't delete it and kept getting the error "no such mntent exists", I tried unmounting both the real pool and the filesystem, however the filesystem is still there and the real pool is unmounted . I still can't delete it in the GUI or through cmd, and when I try to force all import I get the error

The configuration object 'conf.system.filesystem.mountpoint' is not unique. An object with the property 'dir' and value '/Quad' already exists.

Quote from cabrio_leo

What is the output of zpool status?

pool: Quad

state: ONLINE

scan: scrub repaired 0B in 6 days 19:45:19 with 0 errors on Tue May 26 17:12:32 2020

config:

NAME STATE READ WRITE CKSUM

Quad ONLINE 0 0 0

raidz1-0 ONLINE 0 0 0

ata-WD5003ABYX-88_LEN_WD-WMAYP6420996 ONLINE 0 0 0

ata-WD5003ABYX-88_LEN_WD-WMAYP6466138 ONLINE 0 0 0

ata-HGST_HTS545050A7E380_140904TM85A3TD0N1YWM ONLINE 0 0 0

ata-WD5003ABYX-88_LEN_WD-WMAYP6421151 ONLINE 0 0 0

errors: No known data errors

Quote from cabrio_leo

Do you mean /dev/sdeX? I would mean that this is your OMV system disk?

No, the 2nd zfs Drive, Quad/Filesystem. It's an empty filesystem, all of my actual Data is stored under /Quad.

Quote from cabrio_leo

This can also be done in the ZFS plugin GUI.

Trying to delete them on the GUI didn't work, just gave me an error message instructing me to use destroy -r