I’m trying to set up NexCloud on local net, without external access. It is installed in container on Truenas, behind Nginx Proxy Manager.
After putting it behind reverse proxy I no longer can use “Use the built-in CODE” option:
I’ve tried installing Collabora - when I’ve enter the address I’ve redirected in Nginx PM for Collabora I get page saying “ok”. When I enter the address into the Office settings I get:
In both cases I see this:
The link brings me to the page that does not explain what the cryptic WOPI shortcut stands for and no pointers what and where to do.
Any pointers greatly appreciated 
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