Can't connect to X11 when running java from RStudio server

Hi all,

I want to run a jar from RStudio Server (on Ubuntu 16.04) via the system function in R.
When I run this command from a crontab, everything work fine.
However, when I run the command from the REPL in RStudio server I receive the exception
"Can't connect to X11 window server using ':0' as the value of the DISPLAY variable"

I do not have X11 installed, and do not wish to. Is it still possible to run the command from RStudio server, and how?

Many thanks in advance!


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