Most of the app is fixed. All of the dashboards work. I had to go to Settings/Data Models and enable acceleration for the 4 SplunkforPaloAltoNetworks data models (Step 4. Check acceleration and summary indexing). And then I had to update it because the date was showing 12/31/69. Once I did that, the dashboards started populating.
Under Step 3. Verify logs are parsed correctly in the above link, it says to do a search for eventtype=pan_config. I was stuck there because I wasn't getting any results. I finally changed it to pan* and got results. There aren't any pan_config eventtypes.