fix error

Gemfile

@@ -12,3 +12,5 @@ gemspec
 
 # To use debugger
 # gem 'debugger'
+gem 'dynamic_form'
+gem 'simple_captcha2', require: 'simple_captcha'

app/controllers/nkuht_donates_controller.rb

@@ -1,7 +1,7 @@
 class NkuhtDonatesController < ApplicationController
   
   include ApplicationHelper
-
+  require 'simple_captcha'
   include SimpleCaptcha::ControllerHelpers
 
   def index
@@ -211,4 +211,4 @@ class NkuhtDonatesController < ApplicationController
     params.require(:nkuht_donate_main).permit!
   end
 
-end
+end