Title: Error activating plugin
Last modified: January 30, 2025

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# Error activating plugin

 *  [miguelpxt](https://wordpress.org/support/users/miguelpxt/)
 * (@miguelpxt)
 * [1 year, 5 months ago](https://wordpress.org/support/topic/error-activating-plugin-54/)
 * Hi
 * Tried to install the plugin but it doen’s activate. It generates a fatal error:
 * 30-Jan-2025 17:21:04 UTC] PHP Fatal error Uncaught TypeError: call_user_func_array():
   Argument #1 ($callback) must be a valid callback, class “\Nswintgricecatlive\
   Activation” not found in /home/******/wp-includes/class-wp-hook.php:324
 * Stack trace:
 * 0 /home/****/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
 * 1 /home/****/wp-includes/plugin.php(517): WP_Hook->do_action()
 * 2 /home/****/wp-admin/includes/plugin.php(703): do_action()
 * 3 /home/****/wp-admin/plugins.php(60): activate_plugin()
 * 4 {main}
 * thrown in /home/****/wp-includes/class-wp-hook.php on line 324
 * Versions: PHP 7.4 / WP: 6.6
    -  This topic was modified 1 year, 5 months ago by [miguelpxt](https://wordpress.org/support/users/miguelpxt/).

Viewing 6 replies - 1 through 6 (of 6 total)

 *  Plugin Author [Anastasiya](https://wordpress.org/support/users/nswanastasia/)
 * (@nswanastasia)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/error-activating-plugin-54/#post-18287174)
 * Hello
 * I will test the module on this WP version and contact you.
 *  Plugin Author [Anastasiya](https://wordpress.org/support/users/nswanastasia/)
 * (@nswanastasia)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/error-activating-plugin-54/#post-18291990)
 * Hello
 * I uploaded a new version of plugin (1.1). Please, install new version and try
   to activate it.
 * If you have any questions, please contact us.
 *  Thread Starter [miguelpxt](https://wordpress.org/support/users/miguelpxt/)
 * (@miguelpxt)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/error-activating-plugin-54/#post-18292121)
 * Hi
 * I’m still getting the error. Also tried on WP 6.7 and the error is the same:
 * Uncaught Error: call_user_func_array(): Argument #1 ($callback) must be a valid
   callback, class “\Nswintgricecatlive\Activation” not found
   in **/home/\*\*\*\*\*\*\*\*\*\*\*\*\*\*/
   wp-includes/class-wp-hook.php** on line **324**
 * Call stack:
    1. `WP_Hook::apply_filters()`
       wp-includes/class-wp-hook.php:348
    2. `WP_Hook::do_action()`
       wp-includes/plugin.php:517
    3. `do_action()`
       wp-admin/includes/plugin.php:703
    4. `activate_plugin()`
       wp-admin/plugins.php:60
 *  Plugin Author [Anastasiya](https://wordpress.org/support/users/nswanastasia/)
 * (@nswanastasia)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/error-activating-plugin-54/#post-18292125)
 * Hi
 * Can you check if the file Activation.php is in the plugin directory?
 *  Thread Starter [miguelpxt](https://wordpress.org/support/users/miguelpxt/)
 * (@miguelpxt)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/error-activating-plugin-54/#post-18298530)
 * Yes it is
 * ![](https://wordpress.org/77a5f7c3-2123-4806-b3ad-7ec3a749e43b)
 *  Plugin Author [Anastasiya](https://wordpress.org/support/users/nswanastasia/)
 * (@nswanastasia)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/error-activating-plugin-54/#post-18306783)
 * Hello
 * Plugin updated. Please, upload it again.

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Error activating plugin’ is closed to new replies.

 * ![](https://ps.w.org/integration-of-icecat-live/assets/icon-128x128.png?rev=3160946)
 * [Integration of Icecat Live](https://wordpress.org/plugins/integration-of-icecat-live/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/integration-of-icecat-live/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/integration-of-icecat-live/)
 * [Active Topics](https://wordpress.org/support/plugin/integration-of-icecat-live/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/integration-of-icecat-live/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/integration-of-icecat-live/reviews/)

 * 6 replies
 * 2 participants
 * Last reply from: [Anastasiya](https://wordpress.org/support/users/nswanastasia/)
 * Last activity: [1 year, 4 months ago](https://wordpress.org/support/topic/error-activating-plugin-54/#post-18306783)
 * Status: not resolved