We have monitored an increased error rate for metrics that are based on the facebookInsightsOwnPosts data source today. This affected for example the Insights Own Posts Table Metric https://app.quintly.com/discover/metric/7135
. We managed to fix this problem.
Accessing the admin creator of a published post lead to the error, so we had to temporary remove the field adminCreator from the data source facebookInsightsOwnPosts. Until it was resolved by Facebook, we had to return n/a or null. For details, see our outreach to Facebook: https://developers.facebook.com/bugs/1227523470714095/
By now everything is back to normal.