The png icons do not appear when I access the URL after downloading the app on to the server.
What errors do you see in the browsers web console?
Above are the error messages. When I look in the folders there are the correct png images.
The fact that the app is looking for pngs in this folder (http s://arbgisapps.ad.arb.ca.gov/webappbuilder/apps/3/widgets/About/images/icon.png) tells me that something went wrong with the download of the app from WAB and subsequent publishing of the app to your web server. The apps/3 is only a folder that would be available in WAB Dev machine and should not be referenced on the web server. Did you download the app from WAB Dev and then extracted the zipped app to your web server?
Deploy your app—Web AppBuilder for ArcGIS (Developer Edition) | ArcGIS for Developers
The other errors about woff and woff2 are due to you not having those MIME types registered with your web server.
Yes, I downloaded the app and the extracted the folder.
Something went wrong then... Try again.
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