Intergrate rasa with mattermost

Hi everyone. I have some issue when trying to connect my rasa chatbot with mattermost.
I build both mattermost and rasa in local. But when i follow the tutorial Mattermost it’s not clear. Can you help me to do this.
thank you.
This is my setting

What exactly is not clear? Are you running the rasa server? Try running it with --debug and check the output.