Method error

app/models/CocoModel.js:502–504

()

        if (!_.isEmpty(collection.models)) { return me.fetch(({ cache: false, success () { return Backbone.Mediator.publish('achievements:new', { earnedAchievements: collection }) } })) }
      },
      error () {
        return console.error('Miserably failed to fetch unnotified achievements', arguments)
      },
      cache: false,
    })
  }