Error 111 connecting to 127.0.0.1:6379. Connection refused.

[ibrahim-cdprc]

First it runs without any error

docker run -p 9181:9181 eoranged/rq-dashboard
RQ Dashboard version 0.6.0
 * Running on 0.0.0.0:9181
 * Serving Flask app "rq_dashboard.cli" (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off

But as soon as I try to load the UI:

[2021-09-01 18:36:32,205] ERROR in app: Exception on / [GET]
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 559, in connect
    sock = self._connect()
  File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 615, in _connect
    raise err
  File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 603, in _connect
    sock.connect(socket_address)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/flask/app.py", line 2447, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.8/site-packages/flask/app.py", line 1952, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python3.8/site-packages/flask/app.py", line 1821, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.8/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/usr/local/lib/python3.8/site-packages/flask/app.py", line 1950, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python3.8/site-packages/flask/app.py", line 1936, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/rq_dashboard/web.py", line 257, in queues_overview
    queues=Queue.all(),
  File "/usr/local/lib/python3.8/site-packages/rq/queue.py", line 42, in all
    for rq_key in connection.smembers(cls.redis_queues_keys)
  File "/usr/local/lib/python3.8/site-packages/redis/client.py", line 2281, in smembers
    return self.execute_command('SMEMBERS', name)
  File "/usr/local/lib/python3.8/site-packages/redis/client.py", line 898, in execute_command
    conn = self.connection or pool.get_connection(command_name, **options)
  File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 1192, in get_connection
    connection.connect()
  File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 563, in connect
    raise ConnectionError(self._error_message(e))
redis.exceptions.ConnectionError: Error 111 connecting to 127.0.0.1:6379. Connection refused.

My Redis is running on docker as well and I can connect to it using my Medis client and app that enqueues tasks using rq.

Python 3.9.7