Nextcloud Office and Collabora built in code server arm64 [snap], do not work in Nextcloud 27.1.8 (and previous versions)

I’m seeing in the various requests for help that there hasn’t been a resolution to the problem. I should be in this case Nextcloud-Office: non stop circling `loading yxz.docx ...` but I don’t know what to do… how do you solve it??
I would be grateful if anyone could find a step by step solution to this!! Thank you