Comprueba que tienes las dependencias necesarias instaladas:
CentOS 6 / RHEL 6
yum install tigervnc-server gnome-core yum groupinstall Desktop
CentOS 7 y 8 / RHEL 7 y 8
yum tigervnc-server gnome-core gnome-classic-session gnome-terminal \ nautilus-open-terminal control-center liberation-mono-fonts metacity xterm
Debian / Ubuntu / Derivados Debian
apt-get install vnc4server gnome-core gnome-panel gnome-settings-daemon \ metacity nautilus gnome-terminal libx11