diff --git a/app/controllers/concerns/controller_rescue_handler.rb b/app/controllers/concerns/controller_rescue_handler.rb
index 60ac09d64..a3e603bd9 100644
--- a/app/controllers/concerns/controller_rescue_handler.rb
+++ b/app/controllers/concerns/controller_rescue_handler.rb
@@ -10,6 +10,10 @@ module ControllerRescueHandler
       Util.logger_error e
       render json: {status: -1, message: "接口数据异常"}
     end
+    rescue_from NoMethodError do |e|
+      Util.logger_error e
+      render json: {status: -1, message: "接口方法异常"}
+    end
     # rescue_from ActionView::MissingTemplate, with: :object_not_found
     # rescue_from ActiveRecord::RecordNotFound, with: :object_not_found
     rescue_from Educoder::TipException, with: :tip_show
diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index 60a437fdc..15f5c67d9 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -1168,7 +1168,7 @@ class ExercisesController < ApplicationController
       #班级的选择
       if params[:exercise_group_id].present?
         group_id = params[:exercise_group_id]
-        exercise_students = @course_all_members.course_find("course_group_id", group_id) #试卷所分班的全部人数
+        exercise_students = @course_all_members.course_find_by_ids("course_group_id", group_id) #试卷所分班的全部人数
         user_ids = exercise_students.pluck(:user_id).reject(&:blank?)
         @exercise_users_list = @exercise_users_list.exercise_commit_users(user_ids)
       end