This plugin was working OK up until the past week or two. Then, intermittently, we're getting an error:
"Recently an error occurred while creating the CSS / JS minify cache: A group configuration for "include-footer" was not set."
I don't know what this means; I don't believe we have an CSS or JS file called "include-footer." How can I find out what's causing this error?
Thanks! I appreciate your help.