when try to install only office server based on there Installing Community Server for Debian, Ubuntu and derivatives so step by step until the latest command
sudo apt-get install onlyoffice-communityserver
get this error:
The following packages have unmet dependencies: onlyoffice-communityserver :
Depends: mono-webserver-hyperfastcgi but it is not going to be installed
Depends: elasticsearch (= 6.5.0) but 7.2.0 is to be installed
and when try to install elasticsearch 6.5.0 get an error
https://discuss.elastic.co/t/install-of-apt-package-is-failing/150385/2
so what to do?