ruby on rails 4 - Rails4, passenger, nginx (application is rails4 but wrongly detected as Rails1 or Rails2) -

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But this is wrong rail 1 or Rail 2. This is probably a bug in Fusion Traveler, so please report it.

The Fusion Traveler assumes that a fixed layout in the Rack app (Rail> = 3) directory Suppose you have a rack app in / webapps / rackapp. After that, there should be at least three entries in that folder: 

  * config.ru, a racket file to start the rack application. This file should have full argument to start the application. * Public /, a folder that has public static web properties, such as images and stylesheets * Tmp /, is used for restart.txt (our application restart mechanism). It will be explained in the following sub-section.   
 Please check your config, config.ru in your router directory and public, tmp folders.  
 Refer:

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