TypeError when adding sample custom widget (TableWidget)

AlexKoval

hi, all! After adding my first custom widget to the View (the TableWidget from the tutorial) I got  this error.

TypeError {} "TypeError: Cannot set property 'innerHTML' of undefined
    at declare.updateDataSourceInfoLabel (http://localhost:5001/extensions/tableWidget/TableWidget.js:83:32)
    at null.<anonymous> (http://localhost:5001/extensions/tableWidget/TableWidget.js:67:14)
    at k (http://js.arcgis.com/3.15/init.js:189:431)
    at q (http://js.arcgis.com/3.15/init.js:189:357)
    at resolve (http://js.arcgis.com/3.15/init.js:191:441)
    at a (http://js.arcgis.com/3.15/init.js:190:311)
    at k (http://js.arcgis.com/3.15/init.js:190:70)
    at q (http://js.arcgis.com/3.15/init.js:189:357)
    at resolve (http://js.arcgis.com/3.15/init.js:191:441)
    at a (http://js.arcgis.com/3.15/init.js:190:311)
    ----------------------------------------

I followed steps from https://developers.arcgis.com/javascript/jshelp/operations-dashboard-extensibility-create-ext-widget.html

just in case, see all my widget files attached.

tableWidget.zip

rscheitlin

Alex,

   No where in your tableWidget.js or your empty tableWidgetTemplate.html does the infoLabel var exist... Normally in the tableWidgetTemplate.html html code there would be a div or some other html element that would have a  data-dojo-attach-point="infoLabel" property on it.