When trying to delete a non-existent topic with the API, I get this (somewhat) understandable error:
status=403
content={"errors":["You are not permitted to view the requested resource."],
"error_type":"invalid_access"}
When trying to delete a non-existent tag, I get this:
status=500
content=NoMethodError in TagsController#destroy -
undefined method `destroy' for nil:NilClass