Hi, im new to ros and kinova. And right now im trying to run a simulation for a kinova arm, the installation are complete. but when i try to run the command in the tutorial: roslaunch kinovagazebo robotlaunch.launch kinova_robotType:=j2n6s300, Gazebo immediately crushed. And here is the meesage in my terminal:

Error [Param.cc:451] Unable to set value [-nan -nan -nan] for key[size] gzclient: /build/ogre-1.9-mqY1wq/ogre-1.9-1.9.0+dfsg1/OgreMain/src/OgreNode.cpp:630: virtual void Ogre::Node::setScale(const Ogre::Vector3&): Assertion `!inScale.isNaN() && "Invalid vector supplied as parameter"' failed. [ INFO] [1541708946.529583490, 0.363000000]: Loading gazeboroscontrol plugin [ INFO] [1541708946.529739830, 0.363000000]: Starting gazeboroscontrol plugin in namespace: j2n6s300 [ INFO] [1541708946.530595959, 0.363000000]: gazeboroscontrol plugin is waiting for model URDF in parameter [/robotdescription] on the ROS param server. Aborted (core dumped) [ WARN] [1541708946.638724711, 0.363000000]: Deprecated syntax, please prepend 'hardwareinterface/' to 'EffortJointInterface' within the tag in joint 'j2n6s300joint1'. [ WARN] [1541708946.639499150, 0.363000000]: Deprecated syntax, please prepend 'hardwareinterface/' to 'EffortJointInterface' within the tag in joint 'j2n6s300joint2'. [ WARN] [1541708946.640085001, 0.363000000]: Deprecated syntax, please prepend 'hardwareinterface/' to 'EffortJointInterface' within the tag in joint 'j2n6s300joint3'. [ WARN] [1541708946.640617219, 0.363000000]: Deprecated syntax, please prepend 'hardwareinterface/' to 'EffortJointInterface' within the tag in joint 'j2n6s300joint4'. [ WARN] [1541708946.641398961, 0.363000000]: Deprecated syntax, please prepend 'hardwareinterface/' to 'EffortJointInterface' within the tag in joint 'j2n6s300joint5'. [ WARN] [1541708946.642482700, 0.363000000]: Deprecated syntax, please prepend 'hardwareinterface/' to 'EffortJointInterface' within the tag in joint 'j2n6s300joint6'. [ WARN] [1541708946.643513221, 0.363000000]: Deprecated syntax, please prepend 'hardwareinterface/' to 'EffortJointInterface' within the tag in joint 'j2n6s300jointfinger1'. [ WARN] [1541708946.644006200, 0.363000000]: Deprecated syntax, please prepend 'hardwareinterface/' to 'EffortJointInterface' within the tag in joint 'j2n6s300jointfinger2'. [ WARN] [1541708946.644392641, 0.363000000]: Deprecated syntax, please prepend 'hardwareinterface/' to 'EffortJointInterface' within the tag in joint 'j2n6s300jointfinger3'. [ INFO] [1541708946.648647440, 0.363000000]: Loaded gazeboroscontrol. [gazebogui-2] process has died [pid 11076, exit code 134, cmd /home/ruxuan/catkinws/src/gazeborospkgs/gazeboros/scripts/gzclient _name:=gazebogui _log:=/home/ruxuan/.ros/log/8c84df30-e393-11e8-8743-f828197a2a1f/gazebogui-2.log]. log file: /home/ruxuan/.ros/log/8c84df30-e393-11e8-8743-f828197a2a1f/gazebo_gui-2*.log

Anyone know how to solve this issue? Thnaks a lot!