Title: Warning: call_user_func_array()
Last modified: April 6, 2021

---

# Warning: call_user_func_array()

 *  Resolved [asadowski10](https://wordpress.org/support/users/asadowski10/)
 * (@asadowski10)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-42/)
 * Hi team,
 * You have a beautiful Warning with you custom method add_filter :
    Warning: call_user_func_array()
   expects parameter 1 to be a valid callback, class ‘TwicPics’ does not have a 
   method ‘__return_false’.
 * Best,

The topic ‘Warning: call_user_func_array()’ is closed to new replies.

 * ![](https://ps.w.org/twicpics/assets/icon-256x256.png?rev=2575381)
 * [Real Time Responsive Images Plugin for WordPress by TwicPics](https://wordpress.org/plugins/twicpics/)
 * [Support Threads](https://wordpress.org/support/plugin/twicpics/)
 * [Active Topics](https://wordpress.org/support/plugin/twicpics/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/twicpics/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/twicpics/reviews/)

## Tags

 * [coding standards](https://wordpress.org/support/topic-tag/coding-standards/)
 * [warning](https://wordpress.org/support/topic-tag/warning/)

 * 0 replies
 * 1 participant
 * Last reply from: [asadowski10](https://wordpress.org/support/users/asadowski10/)
 * Last activity: [5 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-42/)
 * Status: resolved