Title: FATAL ERROR WHEN CACHE IS ENABLED
Last modified: July 19, 2017

---

# FATAL ERROR WHEN CACHE IS ENABLED

 *  [vividtreks](https://wordpress.org/support/users/vividtreks/)
 * (@vividtreks)
 * [8 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-when-cache-is-enabled/)
 * I’m having issues whenever I allow the Cache System function to be enabled. Whenever
   I enable it, I keep getting:
 * Fatal error: Unknown: Cannot use output buffering in output buffering display
   handlers in Unknown on line 0
 * Note that I’m currently running on WP4.8 and have the Themify Ultra theme on.
    -  This topic was modified 8 years, 8 months ago by [vividtreks](https://wordpress.org/support/users/vividtreks/).

Viewing 1 replies (of 1 total)

 *  Plugin Author [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * (@emrevona)
 * [8 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-when-cache-is-enabled/#post-9334941)
 * are you using v0.8.7.1?

Viewing 1 replies (of 1 total)

The topic ‘FATAL ERROR WHEN CACHE IS ENABLED’ is closed to new replies.

 * ![](https://ps.w.org/wp-fastest-cache/assets/icon-256x256.png?rev=2064586)
 * [WP Fastest Cache - WordPress Cache Plugin](https://wordpress.org/plugins/wp-fastest-cache/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-fastest-cache/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-fastest-cache/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-fastest-cache/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-fastest-cache/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-fastest-cache/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * Last activity: [8 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-when-cache-is-enabled/#post-9334941)
 * Status: not resolved