After creating a Story Map Journal web application in Portal for ArcGIS 10.4.1 in a disconnected environment with the web app in Portal for ArcGIS, trying to create a map from the web application results in the following error:
“Sorry, creating or editing a map is not supported since the story map application is not hosted in Portal for ArcGIS. Please contact your ArcGIS administrator for more information. You can create a map using map viewer, then come back here to add it to your story.”