Problem with rviz
HI I don't know what happened I ran rviz very well but after 2 hours I can't run rviz
when I type "rosrun rviz rviz" , I got this error :
> /opt/ros/hydro/lib/rviz/rviz: symbol > lookup error: > /opt/ros/hydro/lib/librviz.so: > undefined symbol: > _ZN3ros7console5printEPNS0_10FilterBaseEPvNS0_6levels5LevelEPKciS7_S7_z