fix: add the request to the serializer context

program/views.py

@@ -285,7 +285,9 @@ class APIUserViewSet(
         if not request.user.is_superuser:
             return Response(status=status.HTTP_401_UNAUTHORIZED)
 
-        serializer = UserSerializer(data=request.data)
+        serializer = UserSerializer(
+            context={"request": request},  # the serializer needs the request in the context
+            data=request.data)
 
         if serializer.is_valid():
             serializer.save()