Access to Dashboard denied

The (Leadership Competency Trainings Quicksight) is no longer accessible: https://us-east-1.quicksight.aws.amazon.com/sn/dashboards/446b45dc-55d5-4ba4-b128-80b995c0df33

The message I'm receiving states this Dashboard cannot be open - Will this be page no longer be available for future viewing or will this data be completely removed?