Hi,
I have the following system:
Nextcloud version: 10.0.1 (running as plugin in FreeNAS)
Operating system and version: FreeNAS 11.1 - U5
My Issue:
I can’t access my nextcloud via IPv6. The IPv6 shown for the nextcloud jail in FreeNas doesn’t work.
IPv4 access works fine.
Version 10 is pretty much unsupported for some time now (except if you pay for enterprise support or FreeNAS has a fork they support themselves 
) Maybe the FreeNAS people can help you here?
Even better would be to use Docker and install the latest Nextcloud release anyway.
Okay, I’ll try that, too.
What is Docker?