Hello Eric,
Thanks for providing the information. I have investigated the issue thoroughly. I have done a test for a plugin conflict, fixed the JS error I pointed out, and even reinstalled WordPress, X theme, and Cornerstone. I switched to the parent theme and I found out that you have inserted this PHP code in your child theme:
/** Defer Parsing Of JavaScript*/
if (!(is_admin() )) {
function defer_parsing_of_js ( $url ) {
if ( FALSE === strpos( $url, '.js' ) ) return $url;
if ( strpos( $url, 'jquery.js' ) ) return $url;
// return "$url' defer ";
return "$url' defer onload='";
}
add_filter( 'clean_url', 'defer_parsing_of_js', 11, 1 );
}
This is the one causing the issue. I have temporarily removed the PHP code. You can now go to X > Theme Options and edit a page in Cornerstone. Kindly check your site now.
Best Regards.