Title: [Plugin: Newsletter] error when activating
Last modified: August 19, 2016

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# [Plugin: Newsletter] error when activating

 *  [Bortch](https://wordpress.org/support/users/bortch/)
 * (@bortch)
 * [15 years, 9 months ago](https://wordpress.org/support/topic/plugin-newsletter-error-when-activating/)
 * Hello,
 * thanks for developing your plugins!
 * I’ve lot of error when activating ‘Newsletter’, with WP_DEBUG on:
 *     ```
       Notice: register_sidebar_widget est déprécié depuis la version 2.8! Utilisez wp_register_sidebar_widget() à la place. in /www/site/wp-includes/functions.php on line 3237
   
       Notice: register_widget_control est déprécié depuis la version 2.8! Utilisez wp_register_widget_control() à la place. in /www/site/wp-includes/functions.php on line 3237
   
       Notice: Undefined index: na in /www/site/wp-content/plugins/newsletter/plugin.php on line 674
   
       Notice: Undefined index: editor in /www/site/wp-content/plugins/newsletter/plugin.php on line 1012
   
       Notice: has_cap est appelé avec un argument qui est déprécié depuis la version 2.0 ! L’utilisation des niveaux d’utilisateur par les extensions et thèmes est désormais interdite. Utiliser les rôles et capacités à la place. in /www/site/wp-includes/functions.php on line 3321
       ```
   
 * Hope it help!
 * [http://wordpress.org/extend/plugins/newsletter/](http://wordpress.org/extend/plugins/newsletter/)

The topic ‘[Plugin: Newsletter] error when activating’ is closed to new replies.

 * ![](https://ps.w.org/newsletter/assets/icon-256x256.png?rev=1052028)
 * [Newsletter - Send awesome emails from WordPress](https://wordpress.org/plugins/newsletter/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/newsletter/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/newsletter/)
 * [Active Topics](https://wordpress.org/support/plugin/newsletter/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/newsletter/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/newsletter/reviews/)

 * 0 replies
 * 1 participant
 * Last reply from: [Bortch](https://wordpress.org/support/users/bortch/)
 * Last activity: [15 years, 9 months ago](https://wordpress.org/support/topic/plugin-newsletter-error-when-activating/)
 * Status: not resolved