Nextcloud office infinite loading

Hello,

I think my problem has been around for a while but I haven’t found any solutions.
I used the Nextcloud instant install on an Apache server and like many other people, I can’t open documents with Nextcloud office even though the collabora server is green in the settings.

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If anyone has managed to solve this problem, thank you in advance.
Nextcloud V27.1.3
Nextcloud Office V8.2.2

Best regards