Undefined method for 'image_changed?'

I've looked at other solutions on the stack. I ran heroku run rake db:migrate

and heroku restart

and it didn't work.

 def method_missing(method, *args, &block)
      if respond_to_without_attributes?(method, true)
        super
      else
        match = match_attribute_method?(method.to_s)
        match ? attribute_missing(match, *args, &block) : super
      end
    end
    # +attribute_missing+ is like +method_missing+, but for attributes. When
    # +method_missing+ is called we check to see if there is a matching

      

        
        
        
      

    

I checked the AddImageToUsers migration file and everything seems to be in order.

class AddImageToUsers < ActiveRecord::Migration
    def change
      add_column :users, :image, :string
    end
  end

      

        
        
        
      

    

App\models\user.rb

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable, :confirmable
  has_many :posts
    mount_uploader :avatar, AvatarUploader
    mount_uploader :image, ImageUploader

  has_many :comments

  def role?(base_role)
    role == base_role.to_s
  end

end

      

        
        
        
      

    

I'm not sure where to check the following