Title: Fatal Error Activating Plugin
Last modified: February 27, 2021

---

# Fatal Error Activating Plugin

 *  [mindeeforman](https://wordpress.org/support/users/mindeeforman/)
 * (@mindeeforman)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-activating-plugin-20/)
 * I’m trying to install your plugin on my current website and get this error:
 * Fatal error: Cannot redeclare add_filter() (previously declared in /home2/realfop0/
   public_html/wp-includes/plugin.php:114) in /home2/realfop0/public_html/wp-content/
   plugins/export-media-with-selected-content/export-media-with-content.php on line
   14
 * Any ideas? Thanks!
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffatal-error-activating-plugin-20%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  [Renatho](https://wordpress.org/support/users/renathoc/)
 * (@renathoc)
 * [4 years, 10 months ago](https://wordpress.org/support/topic/fatal-error-activating-plugin-20/#post-14468751)
 * Hello!
 * It’s a very weird issue. It says that the core function `add_filter` is being
   created again. But it’s not created by Regenerate Thumbnails. Maybe can it be
   an error in this plugin (export-media-with-selected-content) of the error?
 * Also, you can check if you’re installing the plugin correctly. You can see more
   details here: [https://wordpress.org/support/article/managing-plugins/#installing-plugins](https://wordpress.org/support/article/managing-plugins/#installing-plugins)
 * I hope it helps you! 😉

Viewing 1 replies (of 1 total)

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

 * ![](https://ps.w.org/regenerate-thumbnails/assets/icon-128x128.png?rev=1753390)
 * [Regenerate Thumbnails](https://wordpress.org/plugins/regenerate-thumbnails/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/regenerate-thumbnails/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/regenerate-thumbnails/)
 * [Active Topics](https://wordpress.org/support/plugin/regenerate-thumbnails/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/regenerate-thumbnails/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/regenerate-thumbnails/reviews/)

## Tags

 * [activate](https://wordpress.org/support/topic-tag/activate/)
 * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/)
 * [Install](https://wordpress.org/support/topic-tag/install/)

 * 1 reply
 * 2 participants
 * Last reply from: [Renatho](https://wordpress.org/support/users/renathoc/)
 * Last activity: [4 years, 10 months ago](https://wordpress.org/support/topic/fatal-error-activating-plugin-20/#post-14468751)
 * Status: not resolved