When executing a GET Post Insights request, the following error is returned when a subset of pages are included in combination with metrics such as post_impressions_organic_unique, post_impressions_unique, post_impressions_paid are included:

"error": { "message": "Permissions error", "type": "OAuthException", "code": 200, "error_subcode": 1504029, "is_transient": false, "error_user_title": "User doesn't have enough permissions to load insights", "error_user_msg": "You do not have enough permission to view the metric.", "fbtrace_id": "AFaJb_wqTEILu3dzJmFYKQM"

The page has been granted the permissions: read_insights, pages_read_engagement, and business_management.

How can I get rid of this error? What permissions do I need to grant?