Unit 3: Creating the behavior of the robot

Unit 3: Creating the behavior of the robot: Creating an Actionlib state
Hello,

When I try to launch flexbe app, it raises an error as shown below:

How can I fix it.

Thank you for your support

Hello @ast1 ,

Is this error happening in exercise 3.5? Could you also please share your code with me? You can send it to aezquerro@theconstructsim.com