Title: Error when trying to deactivate a plugin
Last modified: February 8, 2021

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# Error when trying to deactivate a plugin

 *  Resolved [tokyographer](https://wordpress.org/support/users/tokyographer/)
 * (@tokyographer)
 * [5 years, 3 months ago](https://wordpress.org/support/topic/error-when-trying-to-deactivate-a-plugin/)
 * When trying to deactivate the Modern Events Calendar plugin I am getting this
   strage error. Has anyone experienced it before?
 * `Fatal error: Uncaught Error: Access to undeclared static property: MEC_Woocommerce\
   Base::$is_mec_active in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/
   mec-woocommerce/mec-woocommerce.php:208 Stack trace: #0 /var/www/vhosts/example.
   com/httpdocs/wp-content/plugins/mec-woocommerce/mec-woocommerce.php(442): MEC_Woocommerce\
   Base::checkPlugins() #1 /var/www/vhosts/example.com/httpdocs/wp-content/plugins/
   mec-woocommerce/mec-woocommerce.php(63): MEC_Woocommerce\Base->preLoad() #2 /
   var/www/vhosts/example.com/httpdocs/wp-content/plugins/mec-woocommerce/mec-woocommerce.
   php(50): MEC_Woocommerce\Base->__construct() #3 /var/www/vhosts/example.com/httpdocs/
   wp-content/plugins/mec-woocommerce/mec-woocommerce.php(451): MEC_Woocommerce\
   Base::instance() #4 /var/www/vhosts/example.com/httpdocs/wp-includes/class-wp-
   hook.php(287): MEC_Woocommerce\{closure}() #5 /var/www/vhosts/example.com/httpdocs/
   wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters() #6 /var/www/vhosts/
   example.com/httpdocs/wp-i in /var/www/vhosts/example.com/httpdocs/wp-content/
   plugins/mec-woocommerce/mec-woocommerce.php on line 208`

Viewing 1 replies (of 1 total)

 *  Plugin Contributor [webnus](https://wordpress.org/support/users/webnus/)
 * (@webnus)
 * [5 years, 3 months ago](https://wordpress.org/support/topic/error-when-trying-to-deactivate-a-plugin/#post-14022535)
 * Hello [@tokyographer](https://wordpress.org/support/users/tokyographer/),
 * Make sure to use the latest version of MEC and MEC Add-Ons.
 * Regarding the fatal error, please follow the steps explained in this article:
   
   [https://webnus.net/dox/modern-events-calendar/what-to-do-if-i-see-fatal-error/](https://webnus.net/dox/modern-events-calendar/what-to-do-if-i-see-fatal-error/)
 * Note: You can contact us via this email [support@webnus.net](https://wordpress.org/support/topic/error-when-trying-to-deactivate-a-plugin/support@webnus.net?output_format=md).
 * Best Regards

Viewing 1 replies (of 1 total)

The topic ‘Error when trying to deactivate a plugin’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/modern-events-calendar-lite_e2f4ff.
   svg)
 * [Modern Events Calendar Lite](https://wordpress.org/plugins/modern-events-calendar-lite/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/modern-events-calendar-lite/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/modern-events-calendar-lite/)
 * [Active Topics](https://wordpress.org/support/plugin/modern-events-calendar-lite/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/modern-events-calendar-lite/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/modern-events-calendar-lite/reviews/)

## Tags

 * [mec](https://wordpress.org/support/topic-tag/mec/)
 * [Modern Events Calendar](https://wordpress.org/support/topic-tag/modern-events-calendar/)

 * 1 reply
 * 2 participants
 * Last reply from: [webnus](https://wordpress.org/support/users/webnus/)
 * Last activity: [5 years, 3 months ago](https://wordpress.org/support/topic/error-when-trying-to-deactivate-a-plugin/#post-14022535)
 * Status: resolved