CarrierWaveを使ってて、NameError: uninitialized constant 〇〇model::〇〇Uploaderが発生したら

code:config/environment.rb

# Load the Rails application.

require_relative 'application'

# Initialize the Rails application.

Rails.application.initialize!

require 'carrierwave/orm/activerecord' # 行末にこれを追加

これで直るはず！