Custom Widget Button Errors Out in RTP Campaign

Natasha_Dolgins
Level 1

Custom Widget Button Errors Out in RTP Campaign

I am using a custom widget button for an RTP campaign (https://info.centrify.com/rs/042-CJH-554/images/rtp-widget-open.png) but when I try and save, I see the following error message (below).

Should I be pasting the full URL ore without the https?

pastedImage_0.png