Response

It is fine, if you want to return the whole object, I would suggest you extract the required content from the response object , maje a dict and return that.

Flask has this issue with json serialization of pydantic object

Its funny you are right

If I print the response string

before returning it, its clearly there

flask just does something weird when I simply return response.response (despite technically it being just a string?)

I solved it by calling str() on the query engines response 🙂