Raster Function output layer's data source inaccessible for package project.

[TimTannenbaum]

While attempting to package an ArcGis Pro project I get an error for layers created using Raster functions Merge and Hillshade. 

Resulting errors are Layer's data source is inaccessible: 71-0-017-2/Hillshade_Merge Rasters
Layer's data source is inaccessible: 71-0-017-2/Merge Rasters
Failed to execute (PackageProject).

Any insight on why this occurs and how to correct this would be greatly appreciated. 

Tim

[DanPatterson]

lots of potential reasons

Package Project (Data Management)—ArcGIS Pro | Documentation

are you sharing internally or externally?

Did you clear geoprocessing history?

more here

Share a project package—ArcGIS Pro | Documentation

This is the link to your error

00003: Layer's data source is inaccessible—ArcGIS Pro | Documentation

For future reference the help contains other links to errors and warnings 

00001: Map does not have layers—ArcGIS Pro | Documentation

and other links to the left in the TOC