Xhr poll error

I receive the title message when I launch Rasa server

This is my setting:

Rasa Version      :         3.0.9
Minimum Compatible Version: 3.0.0
Rasa SDK Version  :         3.0.6
Rasa X Version    :         1.1.0
Python Version    :         3.8.0
Operating System  :         Linux-5.13.0-40-generic-x86_64-with-glibc2.10
Python Path       :         /home/andres/anaconda3/envs/rasas/bin/python

The command: `

rasa run --m models --endpoints endpoints.yml --port 5005 -vv --enable-api --credentials credentials.yml

And this is the output (last line) before launch chatbot code:

2022-04-26 09:17:10 DEBUG    rasa.utils.tensorflow.models  - Finished loading the model.
2022-04-26 09:17:10 DEBUG    rasa.engine.graph  - Node 'rule_only_data_provider' loading 'RuleOnlyDataProvider.load' and kwargs: '{}'.
2022-04-26 09:17:10 DEBUG    rasa.engine.storage.local_model_storage  - Resource 'train_RulePolicy1' was requested for reading.
2022-04-26 09:17:10 DEBUG    rasa.engine.graph  - Node 'select_prediction' loading 'DefaultPolicyPredictionEnsemble.load' and kwargs: '{}'.
2022-04-26 09:17:10 INFO     root  - Rasa server is up and running.
2022-04-26 09:17:10 INFO     root  - Enabling coroutine debugging. Loop id 94060252288288.

When I try to access, the server show this error:

The client is using an unsupported version of the Socket.IO or Engine.IO protocols (further occurrences of this error will be logged with level INFO)

the credentials.yml is this:

rest:
socketio:
  user_message_evt: user_uttered
  bot_message_evt: bot_uttered
  session_persistence: false

#mattermost:
#  url: "https://<mattermost instance>/api/v4"
#  token: "<bot token>"
#  webhook_url: "<callback URL>"

# This entry is needed if you are using Rasa X. The entry represents credentials
# for the Rasa X "channel", i.e. Talk to your bot and Share with guest testers.
rasa:
  url: "http://localhost:5002/api"

And the script of the chatbot is:

Hi! :smiley:

Are you using botfront rasa widget for frontend?

I think you need to put --cors "*" command too

Maybe, this thread can help you