Title: ob_end_flush
Last modified: July 8, 2020

---

# ob_end_flush

 *  [Ryan](https://wordpress.org/support/users/savvypop/)
 * (@savvypop)
 * [5 years, 10 months ago](https://wordpress.org/support/topic/ob_end_flush-3/)
 *     ```
       [08-Jul-2020 22:17:52 UTC] PHP Notice:  ob_end_flush(): failed to send buffer of zlib output compression (0) in /home/•••/public_html/wp-includes/functions.php on line 4609
       [08-Jul-2020 22:17:52 UTC] PHP Notice:  ob_end_flush(): failed to send buffer of zlib output compression (0) in /home/•••/public_html/wp-content/plugins/gallery-custom-links/mgcl_core.php on line 189
       ```
   
 * I have noticed this before in my debug.log files on the sites where I use your
   plugin, but ignored as it didn’t seem to be an issue. Today, on one site, I was
   attempting to do a basic update to a page that didn’t even display a gallery.
   I noticed upon trying to save the page that it stalled out and I got 500 internal
   server error. I looked for the debug.log file and it had reached over 1GB. It
   was the first line above once, then the second line repeated.
 * I removed your plugin from my plugins folder and the error continued even after
   that. My site was unreachable for 20-30 minutes until something was reset. I 
   tried to reactivate the plugin afterward and the same thing happened again.
 * Let me know if you need more info…

Viewing 1 replies (of 1 total)

 *  Thread Starter [Ryan](https://wordpress.org/support/users/savvypop/)
 * (@savvypop)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/ob_end_flush-3/#post-13415246)
 * I tried to reinstall the plugin today to see if anything had been resolved, but
   still seeing the same error as above

Viewing 1 replies (of 1 total)

The topic ‘ob_end_flush’ is closed to new replies.

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## Tags

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

 * 1 reply
 * 1 participant
 * Last reply from: [Ryan](https://wordpress.org/support/users/savvypop/)
 * Last activity: [5 years, 7 months ago](https://wordpress.org/support/topic/ob_end_flush-3/#post-13415246)
 * Status: not resolved