Replace Cpanel to CyberPanel!

Hi,

I need to change my cpanel to CyberPanel !
When i try to install it at PuTTY , i get this

after write commend # chmod 755 installer.sh # sh installer.sh

Branch name fetched...v2.3.1
Checking root privileges...
You are runing as root...
Valid IP detected...
Checking server location...
Desktop OS not detected. Proceeding
System: CentOS 7 detected...
Checking virtualization type...
OpenVZ detected...
cPanel detected...

You need to use fresh empty server to install cyberpanel. After installation import your stuff to cyberpanel.

if you want to install cyberpanel on your vps that must be fresh os if you have any stuck on it you cant install it