Fix null to 0 in aggregate

app/user/views.py

@@ -3,6 +3,7 @@ from django.views.generic import CreateView
 from django.contrib.auth import login
 from django.urls import reverse_lazy
 from django.db.models import Count, Sum, F, IntegerField
+from django.db.models.functions import Coalesce
 
 from rest_framework.viewsets import ModelViewSet, GenericViewSet
 from rest_framework import mixins
@@ -96,9 +97,9 @@ class UserViewSet(mixins.RetrieveModelMixin,
     @action(methods=["get"], detail=False)
     def user_stats(self, request):
         stats = User.objects.filter(id=request.user.id).aggregate(
-            total_size=Sum("torrents__size"),
-            total_torrent=Count("torrents"),
-            total_shared_torrent=Count("torrents_shares", distinct=True),
+            total_size=Coalesce(Sum("torrents__size"), 0),
+            total_torrent=Coalesce(Count("torrents"), 0),
+            total_shared_torrent=Coalesce(Count("torrents_shares", distinct=True), 0),
         )
 
         disk_usage = shutil.disk_usage("/")