i have some issues with getting the custom in-panel widget running. I followed the steps of Create a custom in-panel widget—Web AppBuilder for ArcGIS (Developer Edition) | ArcGIS for Developers and also create a custom in panel widget problem and Question about creating custom in-panel widget. but the Widget is still not running correctly.
I can add it to a map, but as soon as I try to open it I get the following message:
"create widget error:
Does anyone have some ideas about how to solve the problem?
Thanks a lot!