Executing JavaScript through AppleScript is turned off in Chrome

This morning all the scripts that use Chrome are getting the following error:

WebBrowserActionAllowJavaScriptFromAppl...
Google Chrome got an error. Executing JavaScript through AppleScript is turned off. To turn it on, f...

Any ideas how to re-enable this?

This is a known issue caused by a change in Chrome’s defaults that was made in a recent update. More here, including instructions on how to fix it: Announcement: Google Chrome 68 Disables KM Access -- How To Fix

Thank you.