Utility Network-Problems accessing the app from web map

[GriMonty]

Problems accessing the app from web map. When creating applications it generates a message that says: "no service network can be found or tracing is not supported. Please provide a valid network with shared tracing configurations." Is it a license problem? Is it a problem of some step that needs to be done?

[RobertKrisher]

Have you followed the steps in this article for creating/sharing a named trace configuration? Best Practices: Named Trace Configuration - Esri Community

[gis_KIWI4]

@GriMonty - This is a common error when the Utility Network isn't included in the Map. 
Can you ensure that the "Utility Network" layer is included in the map that you publish from ArcGIS Pro. 
A check to see if this has worked is to see the map properties in the MapViewer.  You should see a Utility Network. 

Another thing to check is that when you publish the map from ArcGIS Pro make sure some trace configurations are shared.