Flask problem : Forums : PythonAnywhere

Hi. I'm currently running simple vote bot for social media on pythonanywhere, and I'm facing very strange issue. After receiving message, something strange happen to Flask:

2019-11-23 21:00:28,807: Exception on / [POST]
Traceback (most recent call last):
  File "/usr/lib/python3.7/site-packages/flask/app.py", line 2292, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/lib/python3.7/site-packages/flask/app.py", line 1816, in full_dispatch_request
    return self.finalize_request(rv)
  File "/usr/lib/python3.7/site-packages/flask/app.py", line 1831, in finalize_request
    response = self.make_response(rv)
  File "/usr/lib/python3.7/site-packages/flask/app.py", line 1957, in make_response
    'The view function did not return a valid response. The'
TypeError: The view function did not return a valid response. The function either returned None or ended without a return statement.

and with the server: it starts to receive same message again and again and sometimes gives this:

2019-11-22 17:43:23 Fri Nov 22 17:43:23 2019 - SIGPIPE: writing to a closed pipe/socket/fd (probably the client disconnected) on request / (ip 10.0.0.249) !!!
2019-11-22 17:43:23 Fri Nov 22 17:43:23 2019 - uwsgi_response_writev_headers_and_body_do(): Broken pipe [core/writer.c line 306] during POST / (10.0.0.249)

My Flask app looks like this:

    from flask import Flask, request, json
    from settings import token, confirmation_token
    import messageHandler

    app = Flask(__name__)

    @app.route('/')
    def hello_world():
        return 'Hello from Flask!'

    @app.route('/', methods=['POST'])
    def processing():
        data = json.loads(request.data)

        if 'type' not in data.keys():
            return 'not vk'
        if data['type'] == 'confirmation':
            return confirmation_token
        elif data['type'] == 'message_new':
            messageHandler.create_answer(data['object'], token)
            return 'ok'

    def curr_user_id():
        data = json.loads(request.data)
        user_id = data['object']['user_id']
        return user_id , 'ok'

Internet says that this Flask error is about returning None or function call in return, but there's nothing like this... What could be the root of the problem?

deleted-user-5515445 | 1 post | Nov. 23, 2019, 9:10 p.m. | permalink