topic Basemap Gallery Widget at 4.4 - Can not read property 'destroy' of null in ArcGIS JavaScript Maps SDK Questions https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/basemap-gallery-widget-at-4-4-can-not-read/m-p/309950#M28508 <HTML><HEAD></HEAD><BODY><P>I'm seeing an error when switching between basemaps using the gallery widget at 4.4.</P><P></P><P><A class="link-titled" href="http://esri.github.io/calcite-maps/samples/arcgis-4.x/arcgis-4.x-example.html" title="http://esri.github.io/calcite-maps/samples/arcgis-4.x/arcgis-4.x-example.html">ArcGIS JS v4, Calcite Maps and Bootstrap Example</A>&nbsp;</P><P></P><P>MapView.js:711 Uncaught TypeError: Cannot read property 'destroy' of null<BR /> at Object.b.detach (MapView.js:711)<BR /> at a._detachLayerView (MapView.js:35)<BR /> at Object.update (MapView.js:31)<BR /> at f._animationFrame (init.js:342)</P></BODY></HTML> Thu, 06 Jul 2017 00:02:43 GMT PhilLarkin1 2017-07-06T00:02:43Z Basemap Gallery Widget at 4.4 - Can not read property 'destroy' of null https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/basemap-gallery-widget-at-4-4-can-not-read/m-p/309950#M28508 <HTML><HEAD></HEAD><BODY><P>I'm seeing an error when switching between basemaps using the gallery widget at 4.4.</P><P></P><P><A class="link-titled" href="http://esri.github.io/calcite-maps/samples/arcgis-4.x/arcgis-4.x-example.html" title="http://esri.github.io/calcite-maps/samples/arcgis-4.x/arcgis-4.x-example.html">ArcGIS JS v4, Calcite Maps and Bootstrap Example</A>&nbsp;</P><P></P><P>MapView.js:711 Uncaught TypeError: Cannot read property 'destroy' of null<BR /> at Object.b.detach (MapView.js:711)<BR /> at a._detachLayerView (MapView.js:35)<BR /> at Object.update (MapView.js:31)<BR /> at f._animationFrame (init.js:342)</P></BODY></HTML> Thu, 06 Jul 2017 00:02:43 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/basemap-gallery-widget-at-4-4-can-not-read/m-p/309950#M28508 PhilLarkin1 2017-07-06T00:02:43Z Re: Basemap Gallery Widget at 4.4 - Cannon read property 'destroy' of null https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/basemap-gallery-widget-at-4-4-can-not-read/m-p/309951#M28509 <HTML><HEAD></HEAD><BODY><P>I didn't experience that error when looking at the site in Chrome (59.0.3071.115), FF (54.0.1), IE (11.1358.14393.0), or Edge (38.14393.1066.0). Which browser are you using?</P></BODY></HTML> Thu, 06 Jul 2017 12:49:06 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/basemap-gallery-widget-at-4-4-can-not-read/m-p/309951#M28509 KenBuja 2017-07-06T12:49:06Z Re: Basemap Gallery Widget at 4.4 - Cannon read property 'destroy' of null https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/basemap-gallery-widget-at-4-4-can-not-read/m-p/309952#M28510 <HTML><HEAD></HEAD><BODY><P>The error no longer occurs for me. This might have been a temporary glitch during the 4.3 to 4.4 switch that took place yesterday.&nbsp;</P></BODY></HTML> Thu, 06 Jul 2017 15:25:09 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/basemap-gallery-widget-at-4-4-can-not-read/m-p/309952#M28510 PhilLarkin1 2017-07-06T15:25:09Z