I am getting started with PI Vision extensibility and I was trying to create a symbol having the basic feature to collapse itself by pushing a button. I started from this :
Error: "[$controller:ctrlreg] http://errors.angularjs.org/1.7.7/$controller/ctrlreg?p0=CollapseDemoCtrl"
<div pv-sym-template="" class="symbol-template-parent">
Any help would be appreciated
Thanks in advance