while the client works fine something seems to have killed xvnc

[root@srv-rhsoft:/etc/X11/xorg.conf.d]$ rpm -q --file /usr/lib64/xorg/modules/extensions/libvnc.so
tigervnc-server-module-1.3.0-7.fc19.x86_64

[root@srv-rhsoft:/etc/X11/xorg.conf.d]$ cat /var/log/Xorg.0.log | grep -i vnc
[ 92504.294] (II) LoadModule: "vnc"
[ 92504.294] (II) Loading /usr/lib64/xorg/modules/extensions/libvnc.so
[ 92504.296] (EE) Failed to load /usr/lib64/xorg/modules/extensions/libvnc.so: /usr/lib64/xorg/modules/extensions/libvnc.so: undefined symbol: key_is_down
[ 92504.296] (II) UnloadModule: "vnc"
[ 92504.296] (II) Unloading vnc
[ 92504.296] (EE) Failed to load module "vnc" (loader failed, 7)

[root@srv-rhsoft:/etc/X11/xorg.conf.d]$ cat 02-vnc.conf 
Section "Module"
 Load       "vnc"
EndSection
Section "Screen"
 Identifier "Screen0"
 Option     "SecurityTypes" "VncAuth"
 Option     "passwordFile" "/root/.vnc/passwd"
EndSection