Title: SEO Redirection Plugin Error
Last modified: January 17, 2019

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# SEO Redirection Plugin Error

 *  Resolved [dubosema](https://wordpress.org/support/users/dubosema/)
 * (@dubosema)
 * [7 years, 4 months ago](https://wordpress.org/support/topic/seo-redirection-plugin-error/)
 * When the plugin is activated on my site, I get the following error when going
   to my website:
 * Fatal error: Call to undefined function is_plugin_active() in /plugins/seo-redirection_/
   seo-redirection.php on line 411
 * The version I have is 4.15. This just started becoming a problem.

Viewing 1 replies (of 1 total)

 *  [Fakhri Alsadi](https://wordpress.org/support/users/fakhris/)
 * (@fakhris)
 * [7 years, 4 months ago](https://wordpress.org/support/topic/seo-redirection-plugin-error/#post-11108148)
 * hello,
    Thank you for reporting this issue,
 * That’s because the file in which is_plugin_active() is defined – wp-admin/includes/
   plugin.php – is only loaded in the admin, after your plugin is loaded
 * please update to the version 4.16 to resolve this, or just download it manually
   from the plugins directory [https://wordpress.org/plugins/seo-redirection/](https://wordpress.org/plugins/seo-redirection/)

Viewing 1 replies (of 1 total)

The topic ‘SEO Redirection Plugin Error’ is closed to new replies.

 * ![](https://ps.w.org/seo-redirection/assets/icon-128x128.jpg?rev=983735)
 * [SEO Redirection Plugin - 301 Redirect Manager](https://wordpress.org/plugins/seo-redirection/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/seo-redirection/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/seo-redirection/)
 * [Active Topics](https://wordpress.org/support/plugin/seo-redirection/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/seo-redirection/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/seo-redirection/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Fakhri Alsadi](https://wordpress.org/support/users/fakhris/)
 * Last activity: [7 years, 4 months ago](https://wordpress.org/support/topic/seo-redirection-plugin-error/#post-11108148)
 * Status: resolved