Server error when trying to export quiz scores - urgent

Hello,

When trying to export quiz scores of users in a new instance  (not the default instance), the file is exported as random  .json  file.

If I use another course that enrolls users in the default instance,  I can export quiz scores just fine.

This is the error I get in the json file when exporting in the new instance:

{"status":500,"developerMessage":"An unknown error has occurred","code":"INTERNAL_SERVER_ERROR","moreInfo":"www.acap.com/errors/reporting/InternalServerError","errors":{"error":"java.lang.IllegalStateException: Duplicate key com.adobe.acap.reporting.controllers.AdminQuizDataControllerQuestionDetails@64e074a9"}}

This is for a paying client, so it would great if I could get a fast response/fix for this -

Thanks-