Ember Assertion Failed: The Response From A Findquery Must Be An Array, Not Undefined

As the title says, the error I am getting is: Error while processing route: index Assertion Failed: The response from a findQuery must be an Array, not undefined I checked every s

Solution 1:

OK, so I found the error source.

I forgot to return the array in extractArray.

The change I made is simply:

extractArray: function(store, type, payload) {
    // ...returnthis._super(store, type, payload); // added this return statement
}

One more thing to note for other people looking at this question. Don't overwrite built-in hooks like normalize or extractArray without specific need and make sure to satisfying the necessary condition of those hooks (such as return value, calling super etc.)