Issue while trying to Import API from Swagger

Hello Team,
As part of POC I am evaluating Katalon Studio Enterprise against ReadyAPI for API testing. However, I am getting stuck while trying to Import Json (URL and file) from Swagger with the following error message:

Note: Importing the same Json file is working fine with ReadyAPI

Please help me with the resolution, so that can proceed with the POC

Thanks,
Nishant