EmberFire initializer problems

I’m unable to host my app on Firebase, and I’m not sure how I could fix it. I’m using Ember Cli with Ember Data.

The error messages are:

Uncaught Error: Namespace “Firebase” already declared.

I saw that people having this error named their app ‘emberfire’ or ‘firebase’. I named my app ‘nutella’ so I don’t know why it’s complaining about the namespace.

Uncaught Error: Could not find module emberfire/initializers/emberfire imported from nutella/initializers/emberfire

nutella/initializers/emberfire doesn’t exist in my folders. However I have it at nutella/node_modules/emberfire/app/initializers/emberfire.js and also on nutella/node_modules/emberfire/addon/initializers/emberfire.js.

What should I do?!