Issues running dash in gunicorn

I have no problems with running dash with shipped flask server (except occasional bugs where I have to restart server since it hangs for some reason).

Therefore I replaced default flask development server with gunicorn, a production wsgi web server.

My app is more or less:

...
app = dash.Dash()
server = app.server
...
if __name__ == '__main__':
    app.run_server(debug=False, host="0.0.0.0")

and I run gunicorn in typical way: gunicorn -w -b 0.0.0.0:8050 module_name.server

However upon contacting this URL; I get only statically rendered component, that is only initial states. Every interactivity is dead and site is unfunctional for me. I see no error reported in gunicorn.

[chriddyp]

I have written a deployment guide for Dash here: https://plot.ly/dash/deployment. It includes an example with Heroku and Gunicorn. I hope that it helps!

[qraxiss]

Hello, i’m created realtime crypto chart flask&dash app. My problem with gunicorn&dash combination. If i start flask “flask run”. I’m not getting refresh errors. But if i start “gunicorn wsgi:app” i got refreshin errors. Let me explain the refresh error: dash callback (or whatever i don’t know where is reason issue) send my chart fig and send None, but if i run app without gunicorn callback dont send None. Please help me.