Failing to add GPU to Plex app

So I do have it set up that TrueNas recognized both iGPU and a Nvidia RTX2000 card installed.
When I go to set the GPU in Plex app setting it doesn’t want to.

Error pop up:

Updating
Error:[EINVAL] values.plex.Storage.additionalStorages: Item#0 is not valid per list types: [EINVAL} storageEntryu.hostPathCOnfig.hostPath: attribute required

What am I doing wrong?