Unable to run the simulator

[codeness0]

Hello,

I installed the simulator following the instruction, and the when I run the following command, It couldn't find the package.
Command:
roslaunch avisengine_environment track_race_simple.launch

Output

RLException: [track_race_simple.launch] is neither a launch file in package [avisengine_environment] nor is [avisengine_environment] a launch file name 
The traceback for the exception was written to the log file

[AmirmohammadZarif]

This is because of the .bashrc file, you need to source the /devel/setup.bash of your workspace in order to get it to work. You can add it to the .bashrc so it doesn't require running the source command, every time you open a new terminal.

echo 'source ~/catkin_ws/devel/setup.bash' >> ~/.bashrc

You can also use nano to add it to the end of the file.

[codeness0]

Thanks.
Ran the command, opened another terminal and it worked.