TrueNas + Nextcloud Database Login help

Running into a problem with Nextcloud on TrueNas Scale.

I have Nextcloud up and running but can’t get past the initial setup.

I can’t find the database login details and every post I’ve found talks about using the shell in TrueNas Jails which isn’t in the current version. I’ve gone into the container shell’s but can’t find the post_install.sh or config.php

I’m also getting the following: Error Cannot create or write into the data directory /mnt/Yorkshire/Nextcloud

I have permissions set as follows for the Dataset.

If i install Nextcloud without changing the default Data directory everything works fine and i don’t have to go through this setup for the database and Admin account.