#AWS Root path access denined on #S3 Static Website Hosting with #CloudFront

Problem. Access Denied on root path of cloudfront's endpoint.

I see Access Denined even I configured 'Index Document' on S3.
And access root path with S3' endpoint works perfect.

Answer. Default Root Object on CloudFront

Configure 'Default Root Object' property on cloudfront same as S3's 'Index Document'.