Currently, if a publicly shared Experience Builder app encounters a feature service error on map load, the only indication is a pop-up window asking the user to log in with his/her ArcGIS Online account. Since the map is publicly shared, users don't have ArcGIS Online accounts. This causes confusion, lots of panic support emails and a loss of confidence in the map. On investigation by the map owner/admin, the issue is almost always that the feature service owner has either pulled down the layer and it's no longer available in the ArcGIS Online ecosystem, or changed sharing settings to something other than Public. I'd like to ask that ESRI improve error trapping in the Experience Builder environment, and provide the user a pop-up identifying the specific feature services that are throwing the errors, and allow the app to ignore the errors and open for the user.
