Fix save images in admin

api/v1/views.py

@@ -376,6 +376,13 @@ class ConfigViewSet(generics.RetrieveUpdateAPIView):
     serializer_class = ConfigSerializer
     permission_classes = (IsAdmin,)
 
+    def perform_update(self, serializer):
+        files = dict()
+        for k, v in self.request.FILES.items():
+            if v:
+                files[k] = v
+        serializer.save(**files)
+
     def get_object(self):
         return Config.load()