I am installing R Studio on AWS ec2 instance running Ubuntu. While installation I get an error "rsession: no process found". After installation I opened "server_ip:8787" in browser, R Studio asked me for login credentials. I am unable to login as it always shows "RStudio initialization error : Unable to connect to server".
In terminal when I enter sudo rstudio-server verify-installation nothing happens.
sudo rstudio-server restart gives rsession: no process found.
I also tried sudo ufw allow 8787 but no success.