diff --git a/apps/counter/api/serializers.py b/apps/counter/api/serializers.py
index 316a420..fe725fa 100644
--- a/apps/counter/api/serializers.py
+++ b/apps/counter/api/serializers.py
@@ -1,3 +1,5 @@
+from django.utils import timezone
+from django.db.models import Sum
 from rest_framework import serializers
 from counter.models import DeviceCount, DeviceInfo
 
diff --git a/apps/counter/api/urls.py b/apps/counter/api/urls.py
index 77caa79..77fb69d 100644
--- a/apps/counter/api/urls.py
+++ b/apps/counter/api/urls.py
@@ -1,9 +1,9 @@
 from django.urls import path
-from .views import DeviceLogsListAPIView, DeviceInfoListAPIView
+from .views import DeviceLogListAPIView, DeviceInfoListAPIView
 
 
 app_name = 'counter-api'
 urlpatterns = [
-    path('logs/', DeviceLogsListAPIView.as_view(), name='logs'),
+    path('logs/', DeviceLogListAPIView.as_view(), name='logs'),
     path('device/', DeviceInfoListAPIView.as_view(), name='device'),
 ]
\ No newline at end of file