Title: Fatal Uncaught TypeError
Last modified: December 8, 2022

---

# Fatal Uncaught TypeError

 *  Resolved [coriolis_too](https://wordpress.org/support/users/coriolis_too/)
 * (@coriolis_too)
 * [3 years, 6 months ago](https://wordpress.org/support/topic/fatal-uncaught-typeerror/)
 * I also have this error with Yoast SEO 19.11:
 * Uncaught TypeError: Argument 1 passed to Yoast\WP\SEO\Generators\Breadcrumbs_Generator::
   Yoast\WP\SEO\Generators\{closure}() must be an instance of Yoast\WP\SEO\Models\
   Indexable, bool given intext:”Plugin: Yoast SEO”
 * I use PHP 7.4, WP 6.1.1, WooCommerce 7.11 and ACF (and others)
    I tried to use
   default theme, tried to use Yoast Test Helper, didnt help The problem appeared
   just after installing Yoast SEO, without any configuration. Configuration doesnt
   change anything.
 * Following some advice found on this forum, I installed Yoast SEO 19.10, and it
   worked flawlessly.
 * As a final test, I updated to 19.11 and now it works. ??
 * The sequence of operation was: clean install of 19.11 (crash), install 19.10 (
   works), update to 19.11 (still works)
 * Hope this helps you find the problem
 * Stephan

Viewing 1 replies (of 1 total)

 *  Plugin Support [Maybellyne](https://wordpress.org/support/users/maybellyne/)
 * (@maybellyne)
 * [3 years, 6 months ago](https://wordpress.org/support/topic/fatal-uncaught-typeerror/#post-16272007)
 * Hello Stephan,
 * I’m sorry about the fatal error, but glad it has been resolved now. And thanks
   for sharing your workflow with us; it’s pretty helpful in further troubleshooting.

Viewing 1 replies (of 1 total)

The topic ‘Fatal Uncaught TypeError’ is closed to new replies.

 * ![](https://ps.w.org/wordpress-seo/assets/icon-256x256.gif?rev=3419908)
 * [Yoast SEO - Advanced SEO with real-time guidance and built-in AI](https://wordpress.org/plugins/wordpress-seo/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wordpress-seo/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wordpress-seo/)
 * [Active Topics](https://wordpress.org/support/plugin/wordpress-seo/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wordpress-seo/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wordpress-seo/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Maybellyne](https://wordpress.org/support/users/maybellyne/)
 * Last activity: [3 years, 6 months ago](https://wordpress.org/support/topic/fatal-uncaught-typeerror/#post-16272007)
 * Status: resolved