Title: Deprecated function Yoast SEO
Last modified: May 19, 2023

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# Deprecated function Yoast SEO

 *  Resolved [ITP TECHNOLOGIE](https://wordpress.org/support/users/abitp/)
 * (@abitp)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/deprecated-function-yoast-seo-2/)
 * **Since the update of your plugin (I own both the Pro and WooCommerce versions),
   this error message keeps appearing on my admin dashboard.**
    - **Deprecated**: La fonction Yoast\WP\SEO\Conditionals\Schema_Blocks_Conditional::
      get_feature_flag est obsolète depuis la version Yoast SEO 20.5, aucune alternative
      n’est disponible. in /var/www/html/wp-includes/functions.php on line 5423
    - **Warning**: Cannot modify header information – headers already sent by (_output
      started at /var/www/html/wp-includes/functions.php:5423_) in /var/www/html/
      wp-admin/includes/misc.php on line 1431
    - **Warning**: Cannot modify header information – headers already sent by (_output
      started at /var/www/html/wp-includes/functions.php:5423_) in /var/www/html/
      wp-includes/functions.php on line 6896
    - **Warning**: Cannot modify header information – headers already sent by (_output
      started at /var/www/html/wp-includes/functions.php:5423_) in /var/www/html/
      wp-admin/admin-header.php on line 9
 *  -  This topic was modified 3 years, 2 months ago by [ITP TECHNOLOGIE](https://wordpress.org/support/users/abitp/).

Viewing 1 replies (of 1 total)

 *  Plugin Support [Maybellyne](https://wordpress.org/support/users/maybellyne/)
 * (@maybellyne)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/deprecated-function-yoast-seo-2/#post-16757290)
 * Hello [@abitp](https://wordpress.org/support/users/abitp/)
 * This forum is reserved for supporting the free version of Yoast SEO. Your site
   is using a premium plugin and add-on so this thread has been marked as resolved
   per the [forum guidelines](https://wordpress.org/support/guidelines/#do-not-post-about-commercial-products).
 * Please contact our support team for assistance if you have an active premium 
   subscription. [How can I get premium support?](https://yoast.com/help/support/#premium?utm_source=support&utm_medium=forum&utm_campaign=support-link)
 * If you do not have an active premium subscription, you can either [purchase a subscription](https://yoast.com/reasons-to-upgrade/)
   or downgrade to the free version.

Viewing 1 replies (of 1 total)

The topic ‘Deprecated function Yoast SEO’ 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, 2 months ago](https://wordpress.org/support/topic/deprecated-function-yoast-seo-2/#post-16757290)
 * Status: resolved