diff --git a/app/helpers/exercises_helper.rb b/app/helpers/exercises_helper.rb
index 0b18ff6f8..f59bee5ac 100644
--- a/app/helpers/exercises_helper.rb
+++ b/app/helpers/exercises_helper.rb
@@ -484,7 +484,11 @@ module ExercisesHelper
                     game_code = game_challenge
                     code = game_code.try(:new_code)
                   else
-                    code = git_fle_content(game.myshixun.repo_path,cha_path)
+                    begin
+                      code = git_fle_content(game.myshixun.repo_path,cha_path)
+                    rescue
+                      code = ""
+                    end
                   end
                 end
                 if ex_shixun_answer_content.blank?  #把关卡的答案存入试卷的实训里
diff --git a/app/views/exercises/_shixun_details.json.jbuilder b/app/views/exercises/_shixun_details.json.jbuilder
index 29a39a594..bd559d37d 100644
--- a/app/views/exercises/_shixun_details.json.jbuilder
+++ b/app/views/exercises/_shixun_details.json.jbuilder
@@ -31,8 +31,9 @@ json.shixun_detail do
     if shixun_challenge.challenge&.path.present?
       if game.try(:lastest_code).blank?
         cha_path = challenge_path(shixun_challenge.challenge&.path)
-        latest_code = git_fle_content(game.myshixun.repo_path,cha_path)
-        if latest_code.to_s == "true"
+        begin
+          latest_code = git_fle_content(game.myshixun.repo_path,cha_path)
+        rescue
           latest_code = ""
         end
       else
diff --git a/lib/tasks/excellent_course_exercise.rake b/lib/tasks/excellent_course_exercise.rake
index a7fac1a8f..4309eec26 100644
--- a/lib/tasks/excellent_course_exercise.rake
+++ b/lib/tasks/excellent_course_exercise.rake
@@ -149,7 +149,12 @@ namespace :excellent_course_exercise do
                   game_code = game_challenge
                   code = game_code.try(:new_code)
                 else
-                  code = git_fle_content(game.myshixun.repo_path,cha_path)
+                  begin  #8-23,hs
+                    code = git_fle_content(game.myshixun.repo_path,cha_path)
+                  rescue
+                    code = ""
+                  end
+                  # code = git_fle_content(game.myshixun.repo_path,cha_path)
                 end
               end
               if ex_shixun_answer_content.blank?  #把关卡的答案存入试卷的实训里