Breaking after upgrading to Ember 3.0

[nelnico]

web-api.js:46 Uncaught TypeError: this._shouldSerializeHasMany is not a function
    at Class.serializeHasMany (web-api.js:46)
    at Class.serializeHasMany (embedded-records-mixin.js:250)
    at Class.superWrapper [as serializeHasMany] (ember-utils.js:428)
    at json.js:519
    at -private.js:2957
    at Map.forEach (<anonymous>)
    at MapWithDeprecations.forEach (-private.js:118)
    at Function.eachRelationship (-private.js:2956)
    at Class.eachRelationship (-private.js:2524)
    at Snapshot.eachRelationship (-private.js:5649)```

I think, although not sure, `_shouldSerializeHasMany` has been removed or changed in 3.0 ember-data 

[nelnico]

Any update on this?

What I find curious, is that when I created a brand new Ember 3.x app, added and configured the ember-web-api addon, it seems to work fine. Odd.