Access-Control-Allow-Origin missing

dear all,

Rasa Version : 2.8.9

i have a problem the website site chat widget as per the documentation


  user_message_evt: user_uttered
  bot_message_evt: bot_uttered
  session_persistence: true

running rasa server with the following command:

rasa run -m models --enable-api --cors “*” --debug -p 5055

html source code

getting the following error

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:5055/ (Reason: CORS header ‘Access-Control-Allow-Origin’ missing