创建课程后跳转URL报错

app/controllers/courses_controller.rb

@@ -429,7 +429,7 @@ class CoursesController < ApplicationController
     else
       respond_to do |format|
               format.html {
-                render :layout => 'base_courses'
+                # render :layout => 'base_courses'
                 flash[:notice] = l(:notice_successful_create)
                 if params[:continue]
                   redirect_to new_course_url(attrs, :course => '0')