I select “Run PWA”
When that command is done, I use the “Clear Site Data” extension, and refresh the webpage.
All I get is a spinning circle (Chrome, Win11, SAB 12.4)
I am unable to determine what is unique about this project.
Old PWA worked.
Since your app is a hymn book, the biggest problem is that we don’t support songbook book types yet.
If you get the spinning circle without any content, that often means there was an exception in the code. You can right-click and select inspect and then choose the console tab to see if there are exceptions.
Uncaught TypeError: Cannot read properties of undefined (reading 'chaptersLabels')
That probably doesn’t mean anything to you. Looking at your project, your only have a FRT book and the songbook (which we don’t currently support).
So this app really can’t be built using the Modern PWA.