Custom Reports: Provided authorization is not valid

Hello,

I'm trying to get information from Custom_Report via your API Reference page. Usually, in every other Personal Data tab, there's a field for entering Bearer token, and after entering the token, the requests are executed correctly.

However, I encountered a problem in Custom reports: there's no entry field there (only X-Partner and X-App), and when I tried to run the script, I got error 401 – ‘Provided authorisation is not valid’.
I added the my token to the script myself, but still get the same error.

Could you please tell me how to fix this? Is it possible to get Custom Reports in the current state of the API?