New Installation of 23:0:2 does not seem to have Office working

Hi,
I have just installed 23.0.2 on a fresh install of Ubuntu 21:10 All has gone smoothly, However when I try to open a document (example.docx) I get a white screen that starts with Loading example.docx and after a few seconds gives Document loading failed, failed to load Nextcloud Office, Try again later… Collabra Online is installed and according to the admin page reachable , Nextcloud Office is installed, and I see no errors… Any bright ideas? I am pretty sure it will be something blindingly simple, but a heads up would be handy.

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