I have been trying to instal elasticsearch with all its components; the first time it was great but I'm a beginner in in IT, so I decided unistall it to practice, them when I tried to install it again, I got the error I mentioned before.
I gotta be honest guys! I didn't know that when you uninstall elasticsearch you uninstall its components, so i tried to uninstall kibana too, but I think I deleted files that might be I've shouldn't.
this is the guide I used to install it https://www.digitalocean.com/community/tutorials/how-to-install-elasticsearch-logstash-and-kibana-elastic-stack-on-ubuntu-18-04-es
The server has Ubuntu 18.4 and it has nginx intalled correcty.
I hope you can help me please!