We installed Web AppBuilder and hooked it up to our local Portal installation and built a test app.
We used these two documents to do so:
https://developers.arcgis.com/web-appbuilder/guide/getstarted.htm
https://developers.arcgis.com/web-appbuilder/guide/build-your-first-app.htm
If I edit the test app the widgets I assigned to be in the test app show up. If I Launch the test app from within Web AppBuilder, the widgets also show up.
When I use the browser debugging tools to track what calls are being made over the network, I see calls like this for widgets:
myserverUrl/widgets/Search/manifest.json?wab_dv=2.3
I then created several other web apps. They work just fine in web app builder "edit" mode. However, if I attempt to launch them within web appbuilder, none of the widgets show up.
When I use the browser debugging tools to track what calls are being made over the network, I see calls like this for widgets:
myserverUrl/widgets/Search/?1234567890123manifest.json&wab_dv=2.3
Obviously, it doesn't find the widget manifest file as the url call is malformed.
I don't know what I've forgotten to do or done wrong.
I've been trying to debug a deployment issue but as I back-tracked thru things, I realized the problem might predate any deployment issues. Unless, of course, one has to have deployed an app before one can launch it in the web appbuilder tool.