Upfront uncaught error popup.html 404

Upfront will not load due to the following error:
Uncaught Error: https://swds.biz/sassnetec/wp-content/themes/upfront/scripts/upfront/templates/popup.html?ufver=1.0.5 HTTP status: 404

I have tried in chrome, firefox and MS Edge. The file does exist at the appropriate location. Support access is enabled. I appreciate any help.