Title: Fatal error: Class ‘WP_REST_Controller’ not found
Last modified: February 13, 2018

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# Fatal error: Class ‘WP_REST_Controller’ not found

 *  Resolved [kiran.ssl22](https://wordpress.org/support/users/kiranssl22/)
 * (@kiranssl22)
 * [8 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-class-wp_rest_controller-not-found/)
 * Hello,
 * I am trying to install plugin on my wordpress site and at the time of activation
   of plugin its give me an error as
 * Fatal error: Class ‘WP_REST_Controller’ not found in /plugins/regenerate-thumbnails/
   includes/class-regeneratethumbnails-rest-controller.php on line 14
 * Kindly guide me with proper procedure.
 * Thank you

Viewing 1 replies (of 1 total)

 *  Plugin Contributor [viper007bond](https://wordpress.org/support/users/viper007bond/)
 * (@viper007bond)
 * [8 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-class-wp_rest_controller-not-found/#post-9969032)
 * Please update your site to the latest version of WordPress.
 * My plugin requires version 4.7 (released in 2016) or newer.

Viewing 1 replies (of 1 total)

The topic ‘Fatal error: Class ‘WP_REST_Controller’ not found’ 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/)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/regenerate-thumbnails/unresolved/)
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 * 1 reply
 * 2 participants
 * Last reply from: [viper007bond](https://wordpress.org/support/users/viper007bond/)
 * Last activity: [8 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-class-wp_rest_controller-not-found/#post-9969032)
 * Status: resolved