To assist you in trouble-shooting, GeoPDF Publisher for ArcGIS Pro creates an error log for specific product features such as GeoPDF Export. The log files are located in the TerraGo Technologies\GeoPDF Publisher for ArcGIS Pro folder where your application data is stored.

In Windows File Explorer, enter: %appdata%\TerraGo Technologies\GeoPDF Publisher for ArcGIS Pro\

The file names begin with P4A_ .