Collabora Connection Refused

Hi everyone,
I come to you because I have a problem with collabora on my Pydio 8.2.2.
When I want edit a text in collabora i have this error message :

Do you have a solution to help me ?
Thanks you

could you tell me how you installed collabora (package or docker) also how did you fill the parameters?

I installed it with docker on a LAMP server.

I just want a “simple” cloud for my home. I am new on pydio so please excuse me if I do “stupid” things ^^