Unable to save sketch layer in MapViewer on Web

[ColinOHagerty]

Hello! I am working in ArcGIS Online's MapViewer where I created a new sketch layer to later use in a StoryMap that I am working on. This sketch layer includes polygons, points, lines, and pop-ups. However, when I go to hit "save" or "save as" to save the map, I receive an error message simply stating: "Unable to add layer to x map; the layer y cannot be added to the map." I am able to save the layers individually as layers, but I am not able to save the map when they are added. In addition, I am unable to open the web mapviewer where I've made these changes in MapViewer Classic.

I am relatively new to ArcGIS online and have no formal training, so there may be something really simple that I am missing, but I haven't found any troubleshooting help online (clearing cache didn't work, there are no permission issues as this would be a private map and I am creating the sketch layer from scratch). 

Thanks in advance for the help y'all!

[dcallaghan]

@ColinOHagerty Did you find a solution to this?

One of my users today reported being unable to save a map in Map Viewer with a sketch layer in it. The dialogue window for saving appeared, but then continually tried to load the user's folders and prevented the save (the user reported it staying that way for 20+mins), without an error message.

Curious to know if others are having issues with sketch layers.