Import - Plugin Error

Just installed Windows 2025.1.2 (first installation). Tried importing Keycloak openapi json and Jira Cloud openapi/postman json. Both result in:

All definitions are usable by Hoppscotch and Postman, so there shouldn’t be an issue in the declaration.
I am not sure if it is a bug or I am just dumb. I couldn’t find anything about needing plugins to import openapi definitions (or other types) in the documentation.

Please help.

Thank you kindly