Well this log appears to be essentially the automatic removal after the failed install of the app … so it’s not clear what’s the actual reason of the failure. Ideally it would be nice to share the “real” installation log. You can find it in the webadmin under Tools > Logs > select the failed install log > then you’ll have a green button to “Share on Yunopaste”.
Anyway, it’s probably due to the rabbitmq-server failing to install somehow … other people reported that issue here : https://github.com/YunoHost-Apps/onlyoffice_ynh/issues/30
As the error message “Error: process_not_running” is not really meaningful, we need someone that reproduce this issue to try and install rabbitmq-server manually in order to diagnose what’s happengin …
This thread points to permission issue …
This one to weird firewall issue …
But if you’re not really familiar with system administration, I’m probably speaking chinese for you right now 