Hello! I keep trying to share a web map from ArcGIS Pro that has three georeferenced (and saved as a new raster) TIFFs and three polygon layers that overlap. Every time I try to upload to a web map and go to ArcGIS Online to map changes, it fails to save.

Anyone have an idea of how or why this keeps failing?
All I really need to do in ArcGIS Online is make groups layers that are toggled on and off with radio buttons. No matter how big or small the web map edit is in ArcGIS Online, nothing saves.