ERROR: cannot launch node of type [gazebo_ros/gazebo_ros_control]:

[IRandonation]

when i tried to use gazebo, i used xacro to creat my four-wheel-car and it successfully show up in gazebo. But when i added gazebo-control, it always showed an error:
ERROR: cannot launch node of type [gazebo_ros/gazebo_ros_control]: Cannot locate node of type [gazebo_ros_control] in package [gazebo_ros]. Make sure file exists in package path and permission is set to executable (chmod +x)
while i already check this file existed in the package, and i use"source .../setup.zsh"to add the env, but this problem is never gone.
tks 4 u help!