Title: Yoast causing PHP error via class-register-capabilities.php
Last modified: June 25, 2018

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# Yoast causing PHP error via class-register-capabilities.php

 *  Resolved [chigginsatwalker](https://wordpress.org/support/users/chigginsatwalker/)
 * (@chigginsatwalker)
 * [7 years, 11 months ago](https://wordpress.org/support/topic/yoast-causing-php-error-via-class-register-capabilities-php/)
 * We’ve suddenly (since yesterday early morning) been getting the PHP error below:
 * > [25-Jun-2018 15:02:39 UTC] PHP Fatal error: Interface ‘WPSEO_WordPress_Integration’
   > not found in [REDACTED PATH]\wp-content\plugins\wordpress-seo\admin\capabilities\
   > class-register-capabilities.php on line 11′
 * I’ve deactivated/reactivated the plugin (v 7.6.1; WP version 4.9.6) and copied
   a fresh copy of the plugin code into the plugins folder but the issue is still
   there. I don’t want to uninstall the plugin as we have tons of SEO data we don’t
   want to lose. (Will that happen if I uninstall?)
 * Any help would be appreciated!
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fyoast-causing-php-error-via-class-register-capabilities-php%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Support [Michael Tiña](https://wordpress.org/support/users/mikes41720/)
 * (@mikes41720)
 * [7 years, 11 months ago](https://wordpress.org/support/topic/yoast-causing-php-error-via-class-register-capabilities-php/#post-10442955)
 * We’ve released Yoast SEO for WordPress v7.7.1. Could you please try this version
   of the plugin and see if this fixes the issue? You can update the plugin manually
   via FTP — [https://kb.yoast.com/kb/how-can-i-update-my-free-plugin/](https://kb.yoast.com/kb/how-can-i-update-my-free-plugin/)
 *  [Jerlyn](https://wordpress.org/support/users/jerparx/)
 * (@jerparx)
 * [7 years, 11 months ago](https://wordpress.org/support/topic/yoast-causing-php-error-via-class-register-capabilities-php/#post-10469717)
 * Closed due to lack of activity.

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

The topic ‘Yoast causing PHP error via class-register-capabilities.php’ is closed
to new replies.

 * ![](https://ps.w.org/wordpress-seo/assets/icon-256x256.gif?rev=3419908)
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## Tags

 * [php-error](https://wordpress.org/support/topic-tag/php-error/)

 * 2 replies
 * 3 participants
 * Last reply from: [Jerlyn](https://wordpress.org/support/users/jerparx/)
 * Last activity: [7 years, 11 months ago](https://wordpress.org/support/topic/yoast-causing-php-error-via-class-register-capabilities-php/#post-10469717)
 * Status: resolved