Fixes #1113: Fixes server error when attempting to delete an image attachment

netbox/extras/views.py

@@ -27,4 +27,4 @@ class ImageAttachmentDeleteView(PermissionRequiredMixin, ObjectDeleteView):
     model = ImageAttachment
 
     def get_return_url(self, request, imageattachment):
-        return imageattachment.obj.get_absolute_url()
+        return imageattachment.parent.get_absolute_url()