The page at http://www.arcgis.com says: Unable to create map : "d is null"
dojo/parser::parse() error TypeError: d is null
f,b,!0)}).then(function(a){return n=n.concat(a)}).otherwise(function(a){console.error("dojo/parser::parse() error",a);throw a;});m.mixin(n,q);return n}};l.parser=B;e.parseOnLoad&&n(100,B,"parse");return B})},"esri/layers/MapImage":function(){define("dojo/_base/declare dojo/_base/lang dojo/has esri/kernel esri/domUtils esri/geometry/Extent".split(" "),function(g,l,m,p,e,h){g=g(null,{declaredClass:"esri.layers.MapImage",constructor:function(e){l.mixin(this,e);this.extent=new h(this.extent)},visible:!0,
Hi - we're receiving the same error in Firefox within an AGO story map. The main stage is set to load a pdf as a web page. As a user scrolls to this section in the story map the error appears: "unable to create map: d is null"
Other browsers don't seem to have this issue.