May 17 2018 08:09 AM
When encountering the following error after creating a SharePoint page layout the cause may be how you are calling a font as a style sheet.
An invalid or empty reference to a Cascading Style Sheet file was specified. Valid references must specify only a filename that ends with a ".css" extension
In my situation the offending line of HTML was as follows:
May 17 2018 10:08 PM
Thanks for sharing but be aware you also have to add Google to the save url's else it will not work