Is GUI a requirement for SC9 installation in linux?

Could you please clarify this for me: I tried the linux installer in a centos machine (no GUI only terminal access) and it did not run, I then tried in a debian machine , again no GUI only terminal, it did not run, then I created a debian VM with GUI and the it worked, but I need to have this installed on a CENTOS VPS on the web.

Am I missing something? Or SC9 linux can only be installed in computers with GUI?

I did install SC9 on several Ubuntu servers for clients without a GUI. No problems.
But I have no experience with CentOS…in general ist should work…

I installed SC9 on Fedora with no GUI e no issue.
I also installed SC8 on CentOS with no GUI.