The form could not be submitted

Thanks for the quick follow-up!

I have fixed the issue and it wasn’t due to anything listed in the documentation. Here’s what happened just in-case anybody else experiences a similar problem.

My child theme had a snippet that adds a “full-review” category to any review with written content. It ran every time someone submitted a review, and it used wp_create_term() to find or create that category.

Version 8.3.0, released September 6, changed how review forms submit: it added REST API endpoints for review submission and pagination, and the front end now uses them, falling back to admin-ajax automatically.

Before that update, submissions went through admin-ajax.php, which loads WordPress’s admin files, so wp_create_term() was available and your snippet worked. From 8.3.0 on, submissions go through the REST API, which doesn’t load those files, so the snippet crashed any review with written content.

The fix was to change this:

$term = wp_create_term('full-review', glsr()->taxonomy);

To this:

$term = term_exists('full-review', glsr()->taxonomy);
if (!$term) {
    $term = wp_insert_term('full-review', glsr()->taxonomy);
}

• This reply was modified 5 days, 3 hours ago by stylise.