502 Bad Gateway

[petrasovaa]

I am trying GeoNode for the first time, so sorry if I am missing something. I tried setting it up based on the documentation: https://docs.geonode.org/en/master/install/basic/index.html#create-an-instance-of-your-geonode-project

I use geonode-project master branch. I do have .env file (copied from .env.sample). When I go to localhost, it just shows 502 Bad Gateway. Output of docker-compose logs -f django:

django4my_geonode | LDAP_SERVER_URL=ldap://<the_ldap_server>
django4my_geonode | MONITORING_DATA_TTL=365
django4my_geonode | Public Hostname or IP is localhost
django4my_geonode | Public PORT is None
django4my_geonode | Can not delete the $HOME/.override_env file as it doesn't exists
django4my_geonode | Traceback (most recent call last):
django4my_geonode |   File "/usr/local/bin/invoke", line 8, in <module>
django4my_geonode |     sys.exit(program.run())
django4my_geonode |   File "/usr/local/lib/python3.8/site-packages/invoke/program.py", line 384, in run
django4my_geonode |     self.execute()
django4my_geonode |   File "/usr/local/lib/python3.8/site-packages/invoke/program.py", line 566, in execute
django4my_geonode |     executor.execute(*self.tasks)
django4my_geonode |   File "/usr/local/lib/python3.8/site-packages/invoke/executor.py", line 129, in execute
django4my_geonode |     result = call.task(*args, **call.kwargs)
django4my_geonode |   File "/usr/local/lib/python3.8/site-packages/invoke/tasks.py", line 127, in __call__
django4my_geonode |     result = self.body(*args, **kwargs)
django4my_geonode |   File "/usr/src/my_geonode/tasks.py", line 121, in update
django4my_geonode |     current_allowed.extend([str(pub_ip), f'{pub_ip}:{pub_port}'])
django4my_geonode | AttributeError: 'str' object has no attribute 'extend'

I am running it on Ubuntu 20.04 with Docker. Thanks for any hints.