diff --git a/apps/quiz/serializers/quiz.py b/apps/quiz/serializers/quiz.py
index dd7c549..64b5903 100644
--- a/apps/quiz/serializers/quiz.py
+++ b/apps/quiz/serializers/quiz.py
@@ -17,14 +17,18 @@ class QuizListSerializer(serializers.ModelSerializer):
         fields = ['id', 'title', 'description', 'permission', 'each_question_timing',]
 
     def get_permission(self, obj):
+        request = self.context.get('request')
+        if not request or not request.user.is_authenticated:
+            return False 
         # Check if the user has participated in this quiz
-        user = self.context['request'].user
+        user = request.user
         participated = QuizParticipant.objects.filter(user=user, quiz=obj).exists()
         return not participated
 
 
 
 
+
 class QuestionSerializer(serializers.ModelSerializer):
     options = serializers.SerializerMethodField()