Summary
Unable to use JSON files using old wizards version
Question
When we run OO rest-wizard.bat, select Swagger as definition format, the URL to Swagger Resource Listing, we get the error message "Invalid URL to a Swagger file"
Answer
That REST Wizard supports only Swagger 1.X and OpenAPI 2.0. The specifications provided in the link are in OpenAPI 3.0.1, and REST Wizard does not support this version of OpenAPI.
Download the last OO REST Wizards, which is 2.0. https://marketplace.microfocus.com/itom/content/oo-rest-wizard