Earlier today we posted an announcement about an issue that has been affecting some stories: ANNOUNCEMENT: Issue with some maps not loading - Esri Community
We wanted to share an update that we have found a fix for this issue that is currently being tested and verified. Our current plan to deploy the fix in a patch Monday evening.
We regret any inconvenience this may have caused. There are several workarounds described in the original announcement that can be used if you have an immediate need to fix this issue in a particular story. Please visit the link above for more information.