Title: Fatal error: Uncaught Error: Call to undefined function ev_array_key_exists()
Last modified: March 11, 2025

---

# Fatal error: Uncaught Error: Call to undefined function ev_array_key_exists()

 *  Resolved [robbertsturdy](https://wordpress.org/support/users/robbertsturdy/)
 * (@robbertsturdy)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-ev_array_key_exists/)
 * After updating to the newest version of the plugin i get a fatal error: Fatal
   error: Uncaught Error: Call to undefined function ev_array_key_exists(). It looks
   like ev_array_key_exists doesnt exist in the plugin

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Contributor [daomapsieucap](https://wordpress.org/support/users/daomapsieucap/)
 * (@daomapsieucap)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-ev_array_key_exists/#post-18355015)
 * Hi [@robbertsturdy](https://wordpress.org/support/users/robbertsturdy/),
 * We apologize for the unexpected bug caused by the plugin. We’ve just released
   version 4.0.12, which addresses this issue. Could you please update to the latest
   version?
 *  Thread Starter [robbertsturdy](https://wordpress.org/support/users/robbertsturdy/)
 * (@robbertsturdy)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-ev_array_key_exists/#post-18355031)
 * Yess thank you this solved the issue. Works fine now

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Fatal error: Uncaught Error: Call to undefined function ev_array_key_exists()’
is closed to new replies.

 * ![](https://ps.w.org/acf-icomoon/assets/icon.svg?rev=2774010)
 * [Support For Icomoon with Advanced Custom Fields](https://wordpress.org/plugins/acf-icomoon/)
 * [Support Threads](https://wordpress.org/support/plugin/acf-icomoon/)
 * [Active Topics](https://wordpress.org/support/plugin/acf-icomoon/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/acf-icomoon/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/acf-icomoon/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [robbertsturdy](https://wordpress.org/support/users/robbertsturdy/)
 * Last activity: [1 year, 2 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-ev_array_key_exists/#post-18355031)
 * Status: resolved