Need help with openai gym gazebo install

edit

when I run the bash turtlebot_setup.bash command in terminal I get this error

chmod: cannot access 'catkin_ws/src/turtlebot_simulator/turtlebot_gazebo/env-hooks/25.turtlebot-gazebo.sh.em': No such file or directory
bash: catkin_ws/src/turtlebot_simulator/turtlebot_gazebo/env-hooks/25.turtlebot-gazebo.sh.em: No such file or directory
cp: cannot create directory 'catkin_ws/src/kobuki/kobuki_description': No such file or directory
cp: cannot create regular file 'catkin_ws/src/kobuki/kobuki_description/meshes': No such file or directory

here is a link to the install page install page