unknown attribute 'valoracion_id' for Rating

I get that error in the controller

def create
val=Valoracion.all
    val.each do |app|
      Rating.create(:user_id => params[:rating][:user_id],
                    :app_id=> params[:rating][:app_id],
                    :valoracion_id => app.id,
                    :valoracion => params[:rating][:valoracion][app.id]
                    )                                                  
     end   
 end    

rating.rb

class Rating < ApplicationRecord
  belongs_to :app
  belongs_to :user
  belongs_to :valoracion
end

valoracion.rb

class Valoracion < ApplicationRecord
  has_many :ratings
 end