"the response does not have an id" error being thrown on response from server

the response does not have an id and your record does not either. Is being thrown on the POST response to my server

I have a model for a tag

export default DS.Model.extend({
  firstName: DS.attr('string'),
  lastName: DS.attr('string'),
  template: DS.attr('number')
});

Then I want to save a bunch at once so I created a bunch of these tag records and have a taglist record with a relationship

export default DS.Model.extend({
  modelList: DS.hasMany('tag')
});

Which also has a serializer

export default DS.JSONAPISerializer.extend(SaveRelationshipsMixin, {
  attrs: {
    modelList: { serialize: true }
  }
});

I create this record like so

const modelList = tags.map((tag) => {
  return this.store.createRecord('tag', {
    firstName: tag[firstNameKey],
    lastName: tag[lastNameKey],
    template: 1
  });
});
const tagList = this.store.createRecord('taglist', {modelList: modelList});
tagList.save().then(()=>{
  this.get('notify').success('Tags Created',{
    closeAfter: 5000
  });
});

Then my response from the POST of my server when I call .save() on this record looks like this

POST response /taglist
{
  "data": [{
    "type": "tags",
    "id": "5aaa7152a243550bbef02c9b",
    "attributes": {
      "firstName": "**",
      "lastName": "**",
      "template": 1,
      "__id__": "5internal-model"
    }
  }, {
    "type": "tags",
    "id": "5aaa7152a243550bbef02c9d",
    "attributes": {
      "firstName": "**",
      "lastName": "**",
      "template": 1,
      "__id__": "7internal-model"
    }
  }, {
    "type": "tags",
    "id": "5aaa7152a243550bbef02c9c",
    "attributes": {
      "firstName": "**",
      "lastName": "**",
      "template": 1,
      "__id__": "6internal-model"
    }
  }, {
    "type": "tags",
    "id": "5aaa7152a243550bbef02c9e",
    "attributes": {
      "firstName": "**",
      "lastName": "**",
      "template": 1,
      "__id__": "8internal-model"
    }
  }]
}

Which is also what a general GET to /tags from my server looks like minus the __id__ attribute of course.

Just for clarity

GET response /tags
{
  "data": [{
    "type": "tags",
    "id": "5aaa71326de48b0b9e6297b1",
    "attributes": {
      "firstName": "**",
      "lastName": "**",
      "template": 1
    }
  }, {
    "type": "tags",
    "id": "5aaa71326de48b0b9e6297b2",
    "attributes": {
      "firstName": "**",
      "lastName": "**",
      "template": 1
    }
  }, {
    "type": "tags",
    "id": "5aaa71326de48b0b9e6297b3",
    "attributes": {
      "firstName": "**",
      "lastName": "**",
      "template": 1
    }
  }, {
    "type": "tags",
    "id": "5aaa71326de48b0b9e6297b4",
    "attributes": {
      "firstName": "**",
      "lastName": "**",
      "template": 1
    }
  }]
}

Why am I getting this Ember error?

frank06 / ember-data-save-relationships

"the response does not have an id" error being thrown on response from server #25