Issues API - Internal Server Error

I am trying to use Gitlab API to perform automation and tracking activities. For this I need to list all issues in a project which are updated in a time frame. I am using the following GET API

This is url is giving response after 20s as

	"message": "500 Internal Server Error"

If I remove scope query parameter, then response is immediate with issue list created by me, but with scope all, it is getting expired with message.

Any help to solve this issue would be appreciated