Title: Fatal Error Message
Last modified: September 1, 2016

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# Fatal Error Message

 *  Resolved [habermas](https://wordpress.org/support/users/habermas/)
 * (@habermas)
 * [9 years, 10 months ago](https://wordpress.org/support/topic/fatal-error-message-162/)
 * We keep getting this error message when we try to activate the YoastSEO plugin
   on our WordPress blog. We host the site ourselves.
    We really like the plugin
   and would like to continue using it.
 * Fatal error: Call to undefined function spl_autoload_register() in /home/gaia/
   www/gaiaprimeradio.com/wp-content/plugins/wordpress-seo/vendor/composer/autoload_real_52.
   php on line 22
 * [https://wordpress.org/plugins/wordpress-seo/](https://wordpress.org/plugins/wordpress-seo/)

The topic ‘Fatal Error Message’ is closed to new replies.

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## Tags

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

 * 0 replies
 * 1 participant
 * Last reply from: [habermas](https://wordpress.org/support/users/habermas/)
 * Last activity: [9 years, 10 months ago](https://wordpress.org/support/topic/fatal-error-message-162/)
 * Status: resolved