Uncaught Error: [$injector:modulerr] Failed to instantiate module App due to: Error: [$injector:unpr] Unknown provider: e

[Jerry Thompson]

I have been working  on a Rails spa app with an AngularJs frontend.  Has worked fine in development,

but when I pushed it up to a staging environment where I am using Nginx, reverse proxy with Puma I began getting 

this error:

Uncaught Error: [$injector:modulerr] Failed to instantiate module App due to: Error: [$injector:unpr] Unknown provider: e

Bit of a novice troubleshooting javascript errors that have been minified so not sure how to track this down.

I believe this is a common error from injection, but I believe i have used the format

angular.module('App')

  .controller 'MyCtrl', [

    'AlchemyResource'

    'Restangular'

    '$scope'

    ( AlchemyResource

      Restangular

      $scope) ->

   ]

that prevents argument mangling.

So how do I track down where this in happening?

Thanks!

   Jet

[Sander Elias]

Hi Jerry,

This is almost always an issue with minification of something that doesn't has the correct format somewhere. 
I would look for a tool that puts those formats in place, there are a few available.

Regards

Sander