Mounting a TrueNAS Pool into NextCloud (via the External Storage application)

Hello All:

What I am trying to do is mount a TrueNAS pool into NextCloud (via the External Storage application). I have perused thru numerous articles and U-tube videos and I just can’t get a TrueNAS pool mounted into NextCloud. Here is a screen shot of what I am doing in NextCloud. There is a Red caution symbol next to Folder name and I don’t know what it means nor do I know how to fix it. Any help will be appreciated.

This would be a question for Truenas. Depends on how you are using Truenas, which version of Truenas, and your permissions.