Error [Model.cc:932] Unable to find link[link] Error [Plugin.hh:156] Failed to load plugin libgazebo_ros_camera.so: libCameraPlugin.so: cannot open shared object file: No such file or directory

Hello, During gazebo simulation, I meet the following errors: > Error [Model.cc:932] Unable to find link[link] Error [Plugin.hh:156] Failed to load plugin libgazebo_ros_camera.so: libCameraPlugin.so: **cannot open shared object file: No such file or directory** I tried install > sudo apt-get install ros-indigo-gazebo-ros-pkgs ros-indigo-gazebo-ros-control I also can find this two lib* > locate libgazebo_ros_camera.so> /opt/ros/indigo/lib/libgazebo_ros_camera.so> locate libCameraPlugin.so> /usr/lib/x86_64-linux-gnu/gazebo-2.2/plugins/libCameraPlugin.so Any help will/would be appreciated.