WMTS source not working in Web Mapping Application

[Lindfire]

Hello, I have an issue with Web Mapping Applications not showing a WMTS basemap or layer. The underlying Web Map works fine on its own. I am using static hosting for the tiles along with a hardcoded capabilities file. This was a known working setup and now no longer seems to work. I have also tried against other WMTS sources, such as GeoServer with no luck.

Using the browser debug tools, there are no errors in the console log and there are no requests even being tried to the source. What else can I do to troubleshoot a basemap or layer from showing in a Web Mapping application?

I am using a State Plane Coordinate System. Various Scale Resolutions were tried including in the Web Mapping Application matching the scales listed in the mapping properties.

Sample map that works perfectly fine:  https://lindfire.maps.arcgis.com/apps/mapviewer/index.html?webmap=a387fe7e024641a49f61fb758a664bb6

Sample Web Mapping Application using the above Web Map, which does not work.  https://lindfire.maps.arcgis.com/apps/webappviewer/index.html?id=3433f3c09db84c39a0da220f480d7935

[RussRoberts · Accepted solution]

Still looking at this issue but it looks to be an localized with 3.x JSAPI which Map Viewer Classic and Web AppBuilder use and has been retired at July 1st along with Web AppBuilder. If you open this map in Experience Builder or an Instant App the map loads. I do see a lot of 404s on tiles being requested on the server so possibly might be a layer issue but I think the issue might be due to this missing on the service: https://sachsemaps.com/2021/WMTSCapabilities.xml/1.0.0/WMTSCapabilities.xml 404s

[Lindfire]

Russ,

Wow!  I had no idea Web Application Builder was being retired. I just tried in the Experience Builder.. Where have I been?  Very, very nice!  And all seems to be good over there and my maps working perfectly on the first try. I really appreciate you looking into and getting back so quickly. No need to look into any further on an old product being retired.

As for the 404's, in my attempt to simplify an example, I took out the valid tiles metadata. All is well.

Best,

Chance

[RussRoberts]

No problem. Forgot to post the retirement blog but just incase here it is: https://www.esri.com/arcgis-blog/products/web-appbuilder/announcements/arcgis-web-appbuilder-roadmap...