Title: PHP Fatal error
Last modified: August 21, 2016

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# PHP Fatal error

 *  [sleeplessindc](https://wordpress.org/support/users/sleeplessindc/)
 * (@sleeplessindc)
 * [12 years, 5 months ago](https://wordpress.org/support/topic/php-fatal-error-27/)
 * I have an error log with the follow message. What is causing this?
    [17-Dec-2013
   08:32:11 America/New_York] PHP Fatal error: Call to undefined function add_action()
   in /home/…./public_html/wp-content/plugins/akismet/legacy.php on line 356
 * [http://wordpress.org/plugins/akismet/](http://wordpress.org/plugins/akismet/)

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## Tags

 * [add_action](https://wordpress.org/support/topic-tag/add_action/)
 * [Call to undefined function:](https://wordpress.org/support/topic-tag/call-to-undefined-function/)
 * [PHP Fatal error](https://wordpress.org/support/topic-tag/php-fatal-error/)

 * 0 replies
 * 1 participant
 * Last reply from: [sleeplessindc](https://wordpress.org/support/users/sleeplessindc/)
 * Last activity: [12 years, 5 months ago](https://wordpress.org/support/topic/php-fatal-error-27/)
 * Status: not resolved