Do not understand error code Property project has no attribute

[ROxX]

This is in the Project Simulation when trying to run the remote simulation model. I don’t see any alternative references.

[roalgoal]

Hi @ROxX, you are not showing the output of a simulation in your terminal output screenshot. It seems like the issue is with the file wall_following.py, with the message self.cmd.linear.x.

Have you defined cmd as a Twist message? I don’t see that in your IDE screenshot, so the error output would make sense.

[ROxX]

I have attached the code. I found this old recommendation - ROS2 Project topics problem - #8 by girishkumar.kannan However using the '/cmd_vel" did not work and ‘cmd_vel’ does not work. Also reset the terminal using the the commands. Here is my code and error message.

[ROxX]

[bayodesegun]

There is a bug on line 7 of your code:

# Here, you are assigning the class `Twist` to `self.cmd`
# This is not what you wanted to do
self.cmd = Twist

It should be:

# Here, you assigning an instance of the class `Twist` to `self.cmd`
# This is what you really wanted to do!
self.cmd = Twist()

Please check that you don’t have similar bugs elsewhere.