Intelligent quads Iq Tutorials MAVROS multiple drone connection issue
Hi There! I have been following Intelligent Quads IQ tutorials recently. I have done almost all of it. Now I am facing problem with MAVROS while connecting multiple drones with MAVROS. It states the connection is started but the ROS code is still waiting for FCU connections. What could be the problem, kindly guide me in this regard.
I have attachecd the main files involved. square.txt multi_square_sol.txt multi-apm.txt ardupilot.txt multi_drone.txt
ROS: Melodic
Ubuntu: 18.04
Results

The program is still Waiting for the FCU connection despite the connection established as seen in the following screenshot:

What do you see in state topic(s)?
I do see MAVROS topics of drone1, drone2 and drone3.
I mean to use rostopic echo.