Omniauth-Devise Error

I'm currently developing a Rails 3 app that uses Devise and Omniauth, and I'm trying to integrate Facebook authentication. Everything seems to be set up correctly, but when I try to go to http://localhost:3000/auth/facebook, it redirects me to Facebook where I get this error:

{
   "error": {
      "type": "OAuthException",
      "messa开发者_如何学编程ge": "Missing client_id parameter."
   }
}

Does anyone know what's going wrong, or how I can fix this? Thanks in advance!

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Figured it out. I was trying to incorporate Omniauth and Devise even though Spree Social had already been set up. Sorry for the trouble!