“Incomplete response received from application” from nginx / passenger

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Your rails_env production don’t have required set up,probably missing secret_key_base.

Open /etc/nginx/sites-available/default and change the rails_env to development:

rails_env production;
        to
rails_env development;

If the app is loading it’s not a passenger issue.

Production Solution:

  1. Enter your app root
  2. run: rake secret
  3. copy the output
  4. go to /yourapp/config/secrets.yml
  5. set the production secret_key_base

Restart the passenger app : 

touch /yourapp/tmp/restart.txt

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