Depending on your browser you can sometimes get an error that reads “The Content Cannot be loaded” when trying to get the URL of the Salesforce OmniScript you would like to reference.
To resolve the issue and access the URL, follow these steps:
To fix this error, go through the normal steps, beginning with selecting “How To Launch” from the dropdown menu in the OmniScript configuration header.
Once the new sceen loads, you will see the error message “The content could no be loaded”.
Again navigate to the OmniScript configuration header and select “Open in Classic Designer”.
Now you should be able to see the URLs needed to embed the OmniScript for both Lightning and Angular.