How could I add an API via the generator?

[Hakureiremu]

I hope to add some new APIs for this project but faced some problems during using the generator part. I have studied the guidance of adding APIs via making API describing configuration, while I'm more interested in the generator function mentioned in the paper.
I use the harvardartmuseum(HVM) API as a test for the generator.
As described in its API's documentation, the apikey is filled in Query Params. I successfully constructed my request and got correct response using Postman, while problems arose when I used the generator to send a sample request.
Initially, in the 3rd box(Authorization), I selected QueryParam as authentication option, and filled the key-value pair with apikey:content of my apikey. However, error message noted me that there is a KeyError in ui.py as the figure below.

I thought client_id and client_secret are not required for accessing HVM API, and this error seemed like a delete of an empty key in a dictionary, so I tried two methods to bypass this error.
First I tried to comment that part of the code locally, but the error still exists.

Second I tried to give these 3 keys a default value, but it arose more errors in pydantic package. I think these fields might be compulsory for this framework.
Moreover, if I tried to choose "No Authorization" option and write the query pair apikey:content of my apikey into the 2nd box. The generator normally return Unauthorized as I think.

So I want to ask how to fill the 3 fields in Authorization box: client_id, client_secret and access_token if I want to use generator to send sample requests to generate api configuration.