Thanks to all for pointing out the error on the site. It’s an open bug on GitHub for Automattic’s JetPack.

Here’s the fix from the bug thread:

The following change to the core function get_the_content() eliminates the problem

if ( is_array( $pages ) ) {
    if ( $page > count( $pages ) ) // if the requested page doesn't exist
        $page = count( $pages ); // give them the highest numbered page that DOES exist
} else { 
    $page = 0;
}

… which I did from my Nexus 6P via ssh in a Termux session!

This site uses Akismet to reduce spam. Learn how your comment data is processed.

To respond on your own website, enter the URL of your response which should contain a link to this post's permalink URL. Your response will then appear (possibly after moderation) on this page. Want to update or remove your response? Update or delete your post and re-enter your post's URL again. (Learn More)