diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index 2239f570d..e2d6110bd 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -1140,6 +1140,7 @@ class ExercisesController < ApplicationController
         exercise_ids = [@exercise.id]
         @exercise_status = @exercise.get_exercise_status(current_user.id)
         @course_all_members = @course.students
+        @c_group_counts = @course.course_groups_count
         question_types = @exercise.exercise_questions.pluck(:question_type)
         @exercise_publish_count = get_user_permission_course(exercise_ids,2).count #判断是否有已发布的分班
         @exercise_unpublish_count = get_user_permission_course(exercise_ids,1).count  #判断是否有未发布的分班
diff --git a/app/controllers/poll_votes_controller.rb b/app/controllers/poll_votes_controller.rb
index eef953d5e..d8a4ce852 100644
--- a/app/controllers/poll_votes_controller.rb
+++ b/app/controllers/poll_votes_controller.rb
@@ -30,16 +30,25 @@ class PollVotesController < ApplicationController
         #begin
         if question_type == 1
           if user_votes.present?  #用户曾经回答过的，答案选择不一样，否则新建
+            logger.info("########___________user_votes.present1111____________________#######")
             current_user_answer = user_votes.first
-            if current_user_answer.poll_answer_id != question_answer_id   #如果说更换了答案，则以前的答案删除，并新建记录
+            if current_user_answer&.poll_answer_id != question_answer_id   #如果说更换了答案，则以前的答案删除，并新建记录
+              logger.info("########___________user_votes.present22222____________________#######")
+
               current_user_answer.destroy
               PollVote.create(vote_answer_params)
             else
+              logger.info("########___________user_votes.present33333____________________#######")
+
               if question_answer_text.present?
+                logger.info("########___________user_votes.present4444444____________________#######")
+
                 current_user_answer.update_attribute("vote_text", question_answer_text)
               end
             end
           else
+            logger.info("########___________user_votes.present555555____________________#######")
+
             PollVote.create(vote_answer_params)
           end
         elsif question_type == 2   #多选题的话，答案应该是1个以上
diff --git a/app/controllers/polls_controller.rb b/app/controllers/polls_controller.rb
index ae93357cc..675e3283c 100644
--- a/app/controllers/polls_controller.rb
+++ b/app/controllers/polls_controller.rb
@@ -956,6 +956,8 @@ class PollsController < ApplicationController
         @poll_publish_count = get_user_permission_course(poll_ids,2).count
         @poll_unpublish_count = get_user_permission_course(poll_ids,1).count
         @course_all_members = @course.students
+        @poll_group_counts = @course.course_groups_count
+
         if @user_course_identity < Course::STUDENT  #当前为老师，而且老师只能查看自己班级的/课堂的问卷
           @poll_current_user_status = 0
           @poll_users_list = @poll.all_poll_users(current_user.id).distinct   #该老师分班的全部学生
diff --git a/app/views/exercises/exercise_lists.json.jbuilder b/app/views/exercises/exercise_lists.json.jbuilder
index 5e7c83b35..26723c894 100644
--- a/app/views/exercises/exercise_lists.json.jbuilder
+++ b/app/views/exercises/exercise_lists.json.jbuilder
@@ -15,7 +15,7 @@ json.exercise_types do
   json.exercise_id @exercise.id
   json.subjective @subjective_type  #是否包含主观题，1为包括，0为不包括
   json.exercise_end_time ((@ex_user_end_time.nil? || @ex_user_end_time < Time.now) ? "--" : how_much_time(@ex_user_end_time))
-  json.groups_count @exercise_course_groups.size
+  json.groups_count @c_group_counts
 end
 
 if @exercise_current_user_status == 0  #当为老师的时候
diff --git a/app/views/polls/poll_lists.json.jbuilder b/app/views/polls/poll_lists.json.jbuilder
index 8278ac3e0..f134967c9 100644
--- a/app/views/polls/poll_lists.json.jbuilder
+++ b/app/views/polls/poll_lists.json.jbuilder
@@ -16,7 +16,7 @@ json.poll_types do
   json.user_permission @poll_current_user_status  #当前用户存在且为课堂教师/管理员/超级管理员时为0 ，其他否则为1
   json.poll_id @poll.id
   json.poll_end_time @poll.end_time
-  json.groups_count @poll_course_groups.size
+  json.groups_count @poll_group_counts
 end
 
 if @poll_current_user_status == 0
diff --git a/lib/tasks/exercise_publish.rake b/lib/tasks/exercise_publish.rake
index 7d80dc2e9..bc9330b66 100644
--- a/lib/tasks/exercise_publish.rake
+++ b/lib/tasks/exercise_publish.rake
@@ -245,6 +245,6 @@ namespace :exercise_publish do
         end
       end
     end
-    logger.info("")
+    Rails.logger.info("log--------------------------------exercise_end completed")
   end
 end