Sara - the Rasa Demo Bot Run Error

Running the rasa demo code that available in git. following the bellow comments to run the code,i am facing issue in the last command “make run-cmdline”

rasa%20error rasa-demo 2.pip install -e . 3.docker run -p 8000:8000 rasa/duckling 4.make run-cmdline

please help me to resolve the issue

Looks like you already have a server running on port 5055, you’ll probably have to kill that process.

Thank you for your response.