Big iq logs error

When I am trying to view logs in Big IQ I see the below error. Can anyone help me on this.

The system returned an unexpected error (400 Bad Request). status:500, body:{"error":{"httpStatus":"INTERNAL_SERVER_ERROR","code":1002,"message":"INTERNAL_SERVER_ERROR: java.lang.NullPointerException: index must not be null","errorStack":[],"restOperationId":"ef7cafe2-d6fa-49d1-8242-126cbb1dedee"}}