Nextcloud onlyoffice app doesnt work

I have a LEMP instance with ubuntu 18.04 …

My /etc/hosts:
127.0.0.1 localhost
127.0.0.1 nextcloud.eduardo.com
127.0.0.1 onlyoffice.eduardo.com

I have a working instance of nextcloud in: nextcloud.eduardo.com, and i want that document server would run in onlyoffice.eduardo.com

I have installed document server using deb package as your documentation says…
Also would like that default server would be localhost pointing to /var/www/html as usual…

I can get it to work as i dont know how to setup document server with nginx…

Here is all my configuration nginx in /etc/nginx
https://drive.google.com/drive/u/1/folders/1I2ZiRUKqmm8u5U5TsqyoOKUvfTwY-SPA

Some how i get it to work but dont know exactly how…

Now the problem im facing is that from nextcloud onlyoffice app i cant connect to http://onlyoffice.eduardo.com ( before i was able), it gives unknown error connection not possible.

Error in nextcloud app onlyoffice:
Error al intentar establecer la conexión (Se ha producido un error en el servicio de documentos: Unknown error)

From log:
{“reqId”:“nJyreNqj0QQWAmAft7wA”,“level”:1,“time”:“November 12, 2019 16:29:36”,“remoteAddr”:“127.0.0.1”,“user”:“nextcloudadmin”,“app”:“onlyoffice”,“method”:“PUT”,“url”:"/index.php/apps/onlyoffice/ajax/settings/address",“message”:“SetStorageUrl: “,“userAgent”:“Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/70.0”,“version”:“16.0.6.1”}
{“reqId”:“nJyreNqj0QQWAmAft7wA”,“level”:0,“time”:“November 12, 2019 16:29:36”,“remoteAddr”:“127.0.0.1”,“user”:“nextcloudadmin”,“app”:“onlyoffice”,“method”:“PUT”,“url”:”/index.php/apps/onlyoffice/ajax/settings/address”,“message”:“CommandRequest on check: {“error”:0,“version”:“5.4.1.39”}”,“userAgent”:“Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/70.0”,“version”:“16.0.6.1”}
{“reqId”:“nJyreNqj0QQWAmAft7wA”,“level”:3,“time”:“November 12, 2019 16:29:36”,“remoteAddr”:“127.0.0.1”,“user”:“nextcloudadmin”,“app”:“onlyoffice”,“method”:“PUT”,“url”:"/index.php/apps/onlyoffice/ajax/settings/address",“message”:“GetConvertedUri on check error: Se ha producido un error en el servicio de documentos: Unknown error”,“userAgent”:“Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/70.0”,“version”:“16.0.6.1”}

Thanks in advance