I figured it out.
First I had to chnage the rights on the libreoffice directory
sudo chmod -R 755 libreoffice
Then to renamme the ctl.sh.disabled in ctl.sh
sudo mv ctl.sh.disabled ctl.sh
then start libreoffice
sudo ctlscript.sh start libreoffice
It's now running.
I'm just wondering if it will start automatically or not when I restart my server.