Rasa chatbot : My custom action is not active

I’m trying to use Rasa chatbot, but the custom action is not active. I first ran rasa run actions , and then ran rasa shell in another Anaconda Prompt. However, while chatting, the below error message came.

2021-07-28 18:06:07 ERROR rasa.core.actions.action - Failed to run custom action ‘action_check_userinfo’. Couldn’t connect to the server at ‘http://localhost:5055/webhook’. Is the server running? Error: Cannot connect to host localhost:5055 ssl:default [Connect call failed (‘’, 5055)] 2021-07-28 18:06:07 ERROR rasa.core.processor - Encountered an exception while running action ‘action_check_userinfo’. Bot will continue, but the actions events are lost. Please check the logs of your action server for more information.

And this is rasa run actions picture. I think that when I use the command, the action server should be working, but it seems to just stop immediately.

Finally, this is my endpoints.yml code.

    url: "http://localhost:5055/webhook"

@KBS Share rasa version rasa --version