Couldn't find an alternative telinit implementation to spawn


#1

Hi everybody.
I am currently running a Linux-Ubuntu subsystem on Windows 10 (64 bit).
I would like to install Rstudio server to run Rstudio on some remote files from sftp/ssh servers.

I have installed "r ('littler') version 0.3.0
using GNU R Version 3.2.2 (2015-08-14)"
(copied from the bash after running the "r --version" command).

Then I copied and pasted the command lines reported here: https://www.rstudio.com/products/rstudio/download-server/

I can run the first 2 commands, but at the third I receive this error message (copied and pasted from the bash):
"(Reading database ... 79460 files and directories currently installed.)
Preparing to unpack rstudio-server-1.1.447-amd64.deb ...
Unpacking rstudio-server (1.1.447) over (1.1.447) ...
Couldn't find an alternative telinit implementation to spawn.
Setting up rstudio-server (1.1.447) ...
useradd: user 'rstudio-server' already exists
groupadd: group 'rstudio-server' already exists
rsession: no process found
Couldn't find an alternative telinit implementation to spawn."

I actually checked and found very few things on "telint" stuffs on the Internet.
Could someone "introduce" or "guide" me to the solution?
Many thanks for your help!