In the rosject there are missing files and the simulation is not working at all.
source ~/simulation_ws/install/setup.bash
ros2 launch turtlebot3_gazebo main_turtlebot3_lab.launch.xml
there is no setup file
user:~$ dir ~/simulation_ws/install/
COLCON_IGNORE turtlebot3_cartographer turtlebot3_description turtlebot3_example turtlebot3_gazebo turtlebot3_msgs turtlebot3_navigation2 turtlebot3_teleop
If i try to rebuid the packages there are faiilure messages