Cache spatial reference error when exporting web map

cr3

This is my first time trying to share a web map.  All of my layers are in the correct projection, NAD 1983 UTM Zone 4N, including my basemap which I made from custom.  When I try to export it, I get the following error: "00079 Cache spatial reference does not match map/dataset/ layer spatial reference" 

How do I change the cache spatial reference?  

 

Thank you 

StephanieM1

Could you try saving your project, closing it, and trying to publish again?

If not, are you able to publish the custom basemap as a layer to ArcGIS Online?

https://pro.arcgis.com/en/pro-app/latest/help/sharing/analyzer-error-messages/00079-cache-spatial-reference-does-not-match-map-dataset-layer-spatial-reference.htm