Title: PHP error
Last modified: May 28, 2019

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# PHP error

 *  Resolved [Vincenzo](https://wordpress.org/support/users/vluongo/)
 * (@vluongo)
 * [7 years ago](https://wordpress.org/support/topic/php-error-326/)
 * Fatal error: Uncaught Error: Call to undefined method WPSEO_Utils::is_yoast_seo_page()
   in /var/www/html/blog/wp-content/plugins/wordpress-seo/admin/class-admin.php:
   75 Stack trace: #0 /var/www/html/blog/wp-content/plugins/wordpress-seo/admin/
   class-admin-init.php(31): WPSEO_Admin->__construct() #1 /var/www/html/blog/wp-
   content/plugins/wordpress-seo/wp-seo-main.php(419): WPSEO_Admin_Init->__construct()#
   2 /var/www/html/blog/wp-includes/class-wp-hook.php(286): wpseo_admin_init(”) #
   3 /var/www/html/blog/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(
   NULL, Array) #4 /var/www/html/blog/wp-includes/plugin.php(465): WP_Hook->do_action(
   Array) #5 /var/www/html/blog/wp-settings.php(394): do_action(‘plugins_loaded’)#
   6 /var/www/html/blog/wp-config.php(106): require_once(‘/var/www/html/b…’) #7 /
   var/www/html/blog/wp-load.php(37): require_once(‘/var/www/html/b…’) #8 /var/www/
   html/blog/wp-admin/admin.php(34): require_once(‘/var/www/html/b…’) #9 /var/www/
   html/blog/wp-admin/index.php(10): require_once(‘/var/www/html/b…’) in /var/www/
   html/blog/wp-content/plugins/wordpress-seo/admin/class-admin.php on line 75

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [devnihil](https://wordpress.org/support/users/devnihil/)
 * (@devnihil)
 * [7 years ago](https://wordpress.org/support/topic/php-error-326/#post-11585901)
 * Can you please confirm you are using the most recent Yoast v11.3? You can learn
   more about updating here: [https://kb.yoast.com/kb/how-can-i-update-my-free-plugin/](https://kb.yoast.com/kb/how-can-i-update-my-free-plugin/)
 * Also, can you confirm that you are using WordPress 5.2.1? You can check by clicking
   on the W in the top left and selecting About. If you need to update, please check
   with your host provider. Please know that if you are using an older version of
   WordPress Core you may experience unexpected behavior with Yoast. This guide 
   explains more: [https://yoast.com/why-we-dont-support-old-wordpress-versions/](https://yoast.com/why-we-dont-support-old-wordpress-versions/)
   ​​
   If you update to the most current version of Yoast SEO and WordPress, does this
   resolve the error?
 *  Plugin Support [amboutwe](https://wordpress.org/support/users/amboutwe/)
 * (@amboutwe)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/php-error-326/#post-11609985)
 * This thread has been marked as resolved due to lack of activity.
 * You’re always welcome to re-open this topic. Please read [this post](https://wordpress.org/support/topic/read-this-before-your-post/)
   before [opening a new request](https://wordpress.org/support/plugin/wordpress-seo#new-post).
 * Thanks for understanding!

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘PHP error’ 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/)
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 * 2 replies
 * 3 participants
 * Last reply from: [amboutwe](https://wordpress.org/support/users/amboutwe/)
 * Last activity: [6 years, 11 months ago](https://wordpress.org/support/topic/php-error-326/#post-11609985)
 * Status: resolved