Title: error when plugin activated
Last modified: July 22, 2017

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# error when plugin activated

 *  [hnnaps](https://wordpress.org/support/users/hnnaps/)
 * (@hnnaps)
 * [8 years, 10 months ago](https://wordpress.org/support/topic/error-when-plugin-activated-2/)
 * I received this error on my website when the RSVP Maker is activated
 * Warning: call_user_func_array() expects parameter 1 to be a valid callback, function‘
   winwar_no_related_posts’ not found or invalid function name in /home3/hnnaps/
   public_html/wp-includes/class-wp-hook.php on line 298
 * It goes away when I de-activate. I love this plug in. Any advice on how to fix
   this.

The topic ‘error when plugin activated’ is closed to new replies.

 * ![](https://ps.w.org/rsvpmaker/assets/icon-128x128.png?rev=1050978)
 * [RSVPMaker](https://wordpress.org/plugins/rsvpmaker/)
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 * 0 replies
 * 1 participant
 * Last reply from: [hnnaps](https://wordpress.org/support/users/hnnaps/)
 * Last activity: [8 years, 10 months ago](https://wordpress.org/support/topic/error-when-plugin-activated-2/)
 * Status: not resolved