ArcGIS Online Template is not working

[hhkaos]

Any clue why this is not working?

The console message:

init.js:199 TypeError: Cannot read property 'ownerDocument' of null(…) "TypeError: Cannot read property 'ownerDocument' of null
    at Object.k.position (http://js.arcgis.com/3.16/init.js:137:197)
    at M (http://hhkaos2.maps.arcgis.com/apps/StorytellingSwipe/app/swipe-viewer-min.js?v=1.8.0:5:101635)
    at A (http://hhkaos2.maps.arcgis.com/apps/StorytellingSwipe/app/swipe-viewer-min.js?v=1.8.0:5:99055)
    at L (http://hhkaos2.maps.arcgis.com/apps/StorytellingSwipe/app/swipe-viewer-min.js?v=1.8.0:5:99005)
    at init (http://hhkaos2.maps.arcgis.com/apps/StorytellingSwipe/app/swipe-viewer-min.js?v=1.8.0:5:108076)
    at http://hhkaos2.maps.arcgis.com/apps/StorytellingSwipe/app/swipe-viewer-min.js?v=1.8.0:5:136163
    at k (http://js.arcgis.com/3.16/init.js:189:431)
    at q (http://js.arcgis.com/3.16/init.js:189:357)
    at resolve (http://js.arcgis.com/3.16/init.js:191:441)
    at http://hhkaos2.maps.arcgis.com/apps/StorytellingSwipe/app/swipe-viewer-min.js?v=1.8.0:5:139901
    ----------------------------------------
    rejected at a (http://js.arcgis.com/3.16/init.js:190:337)
    at k (http://js.arcgis.com/3.16/init.js:190:89)
    at q (http://js.arcgis.com/3.16/init.js:189:357)
    at resolve (http://js.arcgis.com/3.16/init.js:191:441)
    at http://hhkaos2.maps.arcgis.com/apps/StorytellingSwipe/app/swipe-viewer-min.js?v=1.8.0:5:139901
    at c (http://js.arcgis.com/3.16/init.js:66:221)
    at d (http://js.arcgis.com/3.16/init.js:66:10)
    at resolve.callback (http://js.arcgis.com/3.16/init.js:67:350)
    at q (http://js.arcgis.com/3.16/init.js:1733:495)
    at http://js.arcgis.com/3.16/init.js:1734:39
    ----------------------------------------
Error
    at then.b.then (http://js.arcgis.com/3.16/init.js:192:253)
    at webmapLoaded (http://hhkaos2.maps.arcgis.com/apps/StorytellingSwipe/app/swipe-viewer-min.js?v=1.8.0:5:135779)"