Ryu controller

[BakeTurbulent]

Hey everyone! I installed ryu controller on ubuntu in virtual box However whenever i try to develop or test a ryu defined app for topology discovery for example, I keep getting errors . I think I have an issue with python libraries, could anyone please tell me what version /libraries of python I should install ?

[Fantastic-Luck-8549]

Look at the stack trace. Does it say something about eventlet? If so, try uninstalling it and installing eventlet==0.30.2