Title: Update Error
Last modified: January 15, 2020

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# Update Error

 *  Resolved [darkallman](https://wordpress.org/support/users/darkallman/)
 * (@darkallman)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/update-error-88/)
 * I just updated to latest and have critical error:
    `AH01071: Got error 'PHP message:
   PHP Warning: include(/httpdocs/wp-content/plugins/wordpress-seo/vendor/composer/../../
   inc/options/class-wpseo-options-backfill.php): failed to open stream: No such
   file or directory in /httpdocs/wp-content/plugins/pixelyoursite/vendor/composer/
   ClassLoader.php on line 444PHP message: PHP Warning: include(): Failed opening'/
   httpdocs/wp-content/plugins/wordpress-seo/vendor/composer/../../inc/options/class-
   wpseo-options-backfill.php' for inclusion (include_path='.:/opt/plesk/php/7.3/
   share/pear') in /httpdocs/wp-content/plugins/pixelyoursite/vendor/composer/ClassLoader.
   php on line 444PHP message: PHP Fatal error: Uncaught Error: Class 'WPSEO_Options_Backfill'
   not found in /httpdocs/wp-content/plugins/wordpress-seo/inc/options/class-wpseo-
   options.php:67\nStack trace:\n#0 /httpdocs/wp-content/plugins/wordpress-seo/inc/
   options/class-wpseo-options.php(82): WPSEO_Options->__construct()\n#1 /httpdocs/
   wp-content/plugins/wordpress-seo/wp-seo-main.php(290): WPSEO_Options::get_instance()\
   n#2 /httpdocs/wp-includes/class-wp-hook.php(288): wpseo_init('')\n#3 /httpdocs/
   wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters(NULL, Array)\n#4 /
   httpdocs/wp-includes/plugin.php(478): WP_Hook->do_action(Array)\n#5 /httpdocs/
   wp-settings.php(392): do_action('plugins_loaded')\n#6 /httpdocs/wp-config.php(
   93): require_once('/var/www/vhosts...')\n#7 /var/www/vhosts/lievel...', referer:
   https://www.lievelabels.nl/wp-admin/post.php?post=76087&action=edit`
 * Going to reinstall it manually to see if that fixes it.

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Thread Starter [darkallman](https://wordpress.org/support/users/darkallman/)
 * (@darkallman)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/update-error-88/#post-12328653)
 * After reinstall no errors occurred. Strange.
 *  [Rob](https://wordpress.org/support/users/gravelrash/)
 * (@gravelrash)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/update-error-88/#post-12328888)
 * Just had the same issue, like you a re-install fixed it.
 *  [Saša](https://wordpress.org/support/users/stodorovic/)
 * (@stodorovic)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/update-error-88/#post-12329004)
 * It’s most likely an issue related to OPcache. Class WPSEO_Options_Backfill is
   removed since 12.8.1, but it seems that old class-wpseo-options.php (and composer
   autoload) was in OPcache. Many servers will refresh Opcache in few seconds, but
   it’s possible that could take longer… I often see similar issues when new class
   is added or old class is removed…
 * Anyway, you should ask your host about OPcache and maybe there is some interface
   for flushing… There is also plugin [WP OPcache](https://wordpress.org/plugins/flush-opcache/).
 *  [Rob](https://wordpress.org/support/users/gravelrash/)
 * (@gravelrash)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/update-error-88/#post-12329265)
 * Might be a cache issue, although not OPCache in this case. Of the 10 sites on
   the server 2 failed (one premium, one free) and the others were fine.
 *  [anne3544](https://wordpress.org/support/users/anne3544/)
 * (@anne3544)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/update-error-88/#post-12336392)
 * hello
    I had the same error on several sites. Uncaught Error: Class ‘WPSEO_Options_Backfill’
   not found
 * I do not dare to update on other sites
    (google traduction)

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Update Error’ is closed to new replies.

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 * 5 replies
 * 4 participants
 * Last reply from: [anne3544](https://wordpress.org/support/users/anne3544/)
 * Last activity: [6 years, 4 months ago](https://wordpress.org/support/topic/update-error-88/#post-12336392)
 * Status: resolved