fix

bots/modules/overlay.py

@@ -59,7 +59,17 @@ class OverlayBotModuleConfig(TelegramBotModuleConfig):
     def form_valid(view, bots_form, config_form):
         ImageFormSet = modelformset_factory(OverlayImage, form=ImageForm, extra=3, can_delete=True)
         formset = ImageFormSet(view.request.POST, view.request.FILES, queryset=config_form.instance.images.all())
-        formset.save()
+        for form in formset.cleaned_data:
+            if form:
+                if form['DELETE']:
+                    form['id'].delete()
+                elif form['image']:
+                    if form['id']:
+                        instance = form['id']
+                        instance.image = form['image']
+                        instance.save()
+                    else:
+                        OverlayImage.objects.create(config=config_form.instance, image=form['image'])
 
 
 class OverlayImage(models.Model):