Hi, I have HAOS in a bare metal Intel PC installation - latest version at time of writing.
I've installed Nextcloud (the alexbelgium version - here
I'm having problems getting Nextcloud Office working. It's installed without issue. I've installed Nextcloud from the Nexcloud app catalogue, along with the 'built-in CODE Callabora Online Development Edition (as recommended for home users.
But I'm getting these issues
I have absolutely no idea how to fix these - I don't have NGINX installed on HAOS or anywhere else in my nextwork - could another HA App have installed it to use, because I haven't and it isn't listed in HA.
Secondly, configuring the 'WOPI' requests 
Anyone know how or where? I followed the links provided and they make no sense to me The curl error link is just a list of the errors with the same description as the error already has logged.
The WOPI link makes no sense whatsoever to me, it has information about editing files, but not which or where those files are, let alone how to.
I tried the advice for the Callabora setup from here But it just kept timing out and wouldn't connect.
I have Tailscale installed - would that mess things up?
Any help gratefully recieved by the 69 year old....