Is there change documentation for version 4.16 that might help me understand why upgrading from 4.15 requires esri/layers/ImageryTileLayer instead of esri/layers/TileLayer ?
// TileLayer produces the error "Failed to create view for layer..."
var tlay = new TileLayer({
url: layerUrl,
title: year
});
// changing to ImageryTileLayer solves the issue.
var tlay = new ImageryTileLayer({
url: layerUrl,
title: year
});