Title: Persistent Server Error
Last modified: February 7, 2020

---

# Persistent Server Error

 *  [darkmatter661](https://wordpress.org/support/users/darkmatter661/)
 * (@darkmatter661)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/persistent-server-error/)
 * Getting an error on the backend consistently showing up every few seconds: [STDERR]
   All-in-One Event Calendar: ob_get_clean(): failed to delete buffer of zlib output
   compression (1) @ /home/xxxx/xxxxxx/wp-content/plugins/all-in-one-event-calendar/
   lib/global-functions.php:38 #8
 * That function is:
 *     ```
       function ai1ec_stop() {
           if ( ob_get_level() ) {
               echo ob_get_clean();
           }
       }
       ```
   

Viewing 1 replies (of 1 total)

 *  [beevee](https://wordpress.org/support/users/beevee/)
 * (@beevee)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/persistent-server-error/#post-12413704)
 * I’m getting “Ai1ec_Event_Not_Found_Exception thrown” every time I try to add 
   a new event.
 * B

Viewing 1 replies (of 1 total)

The topic ‘Persistent Server Error’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/all-in-one-event-calendar.svg)
 * [Timely All-in-One Events Calendar](https://wordpress.org/plugins/all-in-one-event-calendar/)
 * [Support Threads](https://wordpress.org/support/plugin/all-in-one-event-calendar/)
 * [Active Topics](https://wordpress.org/support/plugin/all-in-one-event-calendar/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/all-in-one-event-calendar/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/all-in-one-event-calendar/reviews/)

## Tags

 * [function](https://wordpress.org/support/topic-tag/function/)

 * 1 reply
 * 2 participants
 * Last reply from: [beevee](https://wordpress.org/support/users/beevee/)
 * Last activity: [6 years, 3 months ago](https://wordpress.org/support/topic/persistent-server-error/#post-12413704)
 * Status: not resolved