roslaunch turtlebot3_gazebo mistake
I wrote this command in terminal:
roslaunch turtlebot3_gazebo turtlebot3_world.launch
But, this error has occurred in terminal:
[turtlebot3_world.launch] is neither a launch file in package [turtlebot3_gazebo] nor is [turtlebot3_gazebo] a launch file name
The traceback for the exception was written to the log file
@kuzey Welcome! I removed the part of your question mentioning that you need urgent help. Although understandable, it's considered bad form to mention deadlines as everyone here has them as well.