TypeError: wrap_socket() got an unexpected keyword argument '_context'

[ghost]

I am using flask, socketio for a chatbot. Locally everything works fine, I can ask bot questions and I get answers. On Heroku server, I get the following Error:

[2020-04-06 09:18:35 +0000] [10] [ERROR] Exception in worker process
Traceback (most recent call last):
File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
worker.init_process()
File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/geventlet.py", line 99, in init_process
super().init_process()
File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/base.py", line 119, in init_process
self.load_wsgi()
File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
self.wsgi = self.app.wsgi()
File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
return self.load_wsgiapp()
File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
return util.import_app(self.app_uri)
File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/util.py", line 358, in import_app
mod = importlib.import_module(module)
File "/app/.heroku/python/lib/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/app/app.py", line 7, in <module>
from controllers.question_controller import model
File "/app/controllers/question_controller.py", line 12, in <module>
model = QuestionAnswerer(data, domain_name, ftp_username, ftp_password)
File "/app/.heroku/python/lib/python3.7/site-packages/socialworks_nn/question_answerer.py", line 14, in __init__
super().__init__(json_data)
File "/app/.heroku/python/lib/python3.7/site-packages/socialworks_nn/data_preprocessing/data_processing.py", line 11, in __init__
download('punkt')
File "/app/.heroku/python/lib/python3.7/site-packages/nltk/downloader.py", line 787, in download
for msg in self.incr_download(info_or_id, download_dir, force):
File "/app/.heroku/python/lib/python3.7/site-packages/nltk/downloader.py", line 636, in incr_download
info = self._info_or_id(info_or_id)
File "/app/.heroku/python/lib/python3.7/site-packages/nltk/downloader.py", line 609, in _info_or_id
return self.info(info_or_id)
File "/app/.heroku/python/lib/python3.7/site-packages/nltk/downloader.py", line 1019, in info
self._update_index()
File "/app/.heroku/python/lib/python3.7/site-packages/nltk/downloader.py", line 962, in _update_index
ElementTree.parse(urlopen(self._url)).getroot()
File "/app/.heroku/python/lib/python3.7/urllib/request.py", line 222, in urlopen
return opener.open(url, data, timeout)
File "/app/.heroku/python/lib/python3.7/urllib/request.py", line 525, in open
response = self._open(req, data)
File "/app/.heroku/python/lib/python3.7/urllib/request.py", line 543, in _open
'_open', req)
File "/app/.heroku/python/lib/python3.7/urllib/request.py", line 503, in _call_chain
result = func(*args)
File "/app/.heroku/python/lib/python3.7/urllib/request.py", line 1360, in https_open
context=self._context, check_hostname=self._check_hostname)
File "/app/.heroku/python/lib/python3.7/urllib/request.py", line 1317, in do_open
encode_chunked=req.has_header('Transfer-encoding'))
File "/app/.heroku/python/lib/python3.7/http/client.py", line 1252, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/app/.heroku/python/lib/python3.7/http/client.py", line 1298, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/app/.heroku/python/lib/python3.7/http/client.py", line 1247, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/app/.heroku/python/lib/python3.7/http/client.py", line 1026, in _send_output
self.send(msg)
File "/app/.heroku/python/lib/python3.7/http/client.py", line 966, in send
self.connect()
File "/app/.heroku/python/lib/python3.7/http/client.py", line 1422, in connect
server_hostname=server_hostname)
File "/app/.heroku/python/lib/python3.7/site-packages/eventlet/green/ssl.py", line 438, in wrap_socket
return GreenSSLSocket(sock, *a, _context=self, **kw)
File "/app/.heroku/python/lib/python3.7/site-packages/eventlet/green/ssl.py", line 76, in __new__
*args, **kw
TypeError: wrap_socket() got an unexpected keyword argument '_context'
[2020-04-06 09:18:35 +0000] [10] [INFO] Worker exiting (pid: 10)
[2020-04-06 09:18:35 +0000] [4] [INFO] Shutting down: Master
[2020-04-06 09:18:35 +0000] [4] [INFO] Reason: Worker failed to boot.

Here is the code where I run my server:

from flask import Flask, render_template, session
from models import db
from flask_restful import Api
from flask_socketio import SocketIO, emit
from controllers.image_controller import ImageController
from controllers.question_controller import model

app = Flask(__name__)
app.config.from_object("config.Config")
app.config['SECRET_KEY'] = '123456'
db.init_app(app)
socketio = SocketIO(app)
api = Api(app)

api.add_resource(ImageController, '/images')

@app.route('/chatbot')
def index():
    return render_template('index.html', async_mode=socketio.async_mode)


@socketio.on('my_event', namespace='/chatbot')
def test_message(question):
    answer = model.get_answer(question['data'])
    session['receive_count'] = session.get('receive_count', 0) + 1
    emit('my_response', {'data': answer, 'count': session['receive_count']})


if __name__ == '__main__':
    socketio.run(app, debug=True, use_reloader=False)

Here is my requirements.txt file:

flask==1.1.1
flask_sqlalchemy==2.4.1
gunicorn==20.0.4
jinja2==2.11.1
mysqlclient==1.4.6
Flask_SocketIO==4.2.1
flask_restful==0.3.8
python-engineio==3.12.1
python-socketio==4.4.0
eventlet==0.25.1
python-dotenv==0.12.0
h5py==2.10.0
setuptools==46.0.0
greenlet==0.4.15
pyopenssl==19.1.0

Here is my Procfile:

web: gunicorn --worker-class eventlet -w 1 app:app

Here is my .gitlab-ci.yml file:

image: "python:3.7"
before_script:
    - apt-get update -qy
    - apt-get install -y python-dev python3-pip
    - apt-get install python-mysqldb
    - pip3 install -r requirements.txt
    - pip3 install python-socketio

production:
  script:
    - apt-get update -qy
    - apt-get install -y ruby-dev
    - gem install dpl
    - export $(grep -v '^#' env/development.env | xargs)
    - dpl --provider=heroku --app=socialworks --api-key=$HEROKU_SECRET_KEY
  only:
    - master

Also, my runtime.txt:
python-3.7.5

I have followed the documentation https://flask-socketio.readthedocs.io/en/latest/#gunicorn-web-server, but I have no idea why this error keeps appearing. I am new to websockets, any help will be appreciated. Maybe there is somekind of workaround this issue?

[breadbored]

Did you find a solution to this?

[ghost]

I had to downgrade to python 3.6 because of eventlet bug.

[breadbored]

I'll try that, thank you.

EDIT: This worked for me. I had the exact same issue with Flak-SocketIO and eventlet on Heroku. I appreciate the response!