I am trying to publish a few mosaic datasets to ArcGIS Online as a weighted raster overlay. Each mosaic dataset was created using 'Create Weighted Overlay Mosaic' and contains just one 30m resolution raster. The challenge is that when I attempt to run 'Create Hosted Imagery' (following these steps), ArcGIS Pro tells me that the status of Data Upload is 'Failed.'

When I use 'Analyze Mosaic Dataset' to look into the problem, the only error I get is Error 70113 that 'The mosaic dataset item references files that are inaccessible.' I have been digging into this for a few hours and have not been able to figure out why Pro finds these files inaccessible. The file path for the mosaic dataset is C:\Users\aaw48\Documents\ArcGIS\LocalFiles\CC.gdb and the raster (GRID format) it is based on is in C:\Users\aaw48\Documents\ArcGIS\LocalFiles\CoresConsv3. These are the original locations that these files were generated in and nothing has been moved, so I don't understand why I'm hitting this error.
More screenshots below. I'm running ArcGIS Pro 3.0.1 off of a university computer.

