Editing Troubleshooting Elastic Beanstalk Deployment (section)

=== Empty HTTP response ===

'''Symptom'''

Make a request for the URL of the site via curl:

<pre>
$ curl https://www.mydomain.com
</pre>

0 bytes and no headers sent in response. 

'''Possible cause'''

PHP code is exiting without errors, but before returning a response.

'''Solution'''

'''Check nginx logs.'''

* `/var/log/nginx/access.log`
* `/var/log/nginx/error.log`

PHP errors are logged to the nginx error log.

'''Confirm that requests are being made to the correct host.''' If nothing is reported in the log files, try connecting to a non-existent file. Then view the access log to confirm that a 404 error was logged. 

'''Confirm PHP configuration.''' Upload a simple index.php file to the server containing a "Hello world" type of response. Make a request to that page. If the server returns the expected response, then it will be necessary to step through the production PHP to locate the code that is causing the script to exit without a response.