H14 bug in heroics - “no running web processes”

Question

H14 error occurs when deploying to geroku this is my procfile:

web: gunicorn -w 4 -b 0.0.0.0:$PORT -k gevent main:app 

log on heroku:

 2017-01-23T10:42:58.904480+00:00 heroku[router]: at=error code=H14 desc="No web processes running" method=GET path="/" host=meetcapstone.herokuapp.com request_id=df88efb5-a81a-4ac0-86dc-4e03d71266bb fwd="81.218.117.137" dyno= connect= service= status=503 bytes= 2017-01-23T10:42:59.009135+00:00 heroku[router]: at=error code=H14 desc="No web processes running" method=GET path="/favicon.ico" host=meetcapstone.herokuapp.com request_id=21cea981-36b0-4410-891f-548bbc29f0ee fwd="81.218.117.137" dyno= connect= service= status=503 bytes= 

requirements:

 Flask==0.11.1 passlib==1.7.0 SQLAlchemy==1.1.5 Werkzeug==0.11.15 gunicorn==19.0.0 gevent==1.2.1 

Answer 1

The problem here is that you are not using any web speakers. You can tell Heroku to do this through:

 $ heroku ps:scale web=1 

This will force Heroku to deploy the web dino, thereby executing your gun’s command.

Answer 2

Before this command:

 heroku ps:scale web=1 

I had to remove and add buildpacks again, clean and commit it, and then redeploy it to heroku.

 heroku buildpacks:clear heroku buildpacks:add --index heroku/python