Introspection failed

In Yaak Version 2025.1.2 (20250226.062659) on macOS 15.3.1 (24D70)

I see a red “Introspection Failed” button when Text Content is set to GraphQL with a valid working query. Clicking on the red button, it shows:

Request failed with status 500. {"errors":[{"message":"Forbidden","extensions":{"code":"FORBIDDEN"}}]}

Clicking either “Try Again” or “Reformat contents” never works. I have no plugins. I couldn’t find any way to disable this option. Is this a bug or am I missing something obvious? Thanks