Title: fdtw's Replies | WordPress.org

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# fdtw

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## Forum Replies Created

Viewing 3 replies - 1 through 3 (of 3 total)

 *   Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/)
    In
   reply to: [[Jeg Kit for Elementor – Powerful Addons for Elementor, Widgets & Templates for WordPress] Uncaught TypeError: Illegal invocation](https://wordpress.org/support/topic/uncaught-typeerror-illegal-invocation-2/)
 *  Thread Starter [fdtw](https://wordpress.org/support/users/fdtw/)
 * (@fdtw)
 * [3 years ago](https://wordpress.org/support/topic/uncaught-typeerror-illegal-invocation-2/#post-16730058)
 * Thanks, everything works now
 *   Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/)
    In
   reply to: [[Jeg Kit for Elementor – Powerful Addons for Elementor, Widgets & Templates for WordPress] Uncaught TypeError: Illegal invocation](https://wordpress.org/support/topic/uncaught-typeerror-illegal-invocation-2/)
 *  Thread Starter [fdtw](https://wordpress.org/support/users/fdtw/)
 * (@fdtw)
 * [3 years ago](https://wordpress.org/support/topic/uncaught-typeerror-illegal-invocation-2/#post-16722854)
 * Hi,
 * I followed your instructions but no change happened. I have added the code in
   functions.php but the same problem is present
 * ![](https://i0.wp.com/i.postimg.cc/ZYBFLybj/issue.gif?ssl=1)
 * ![](https://i0.wp.com/i.postimg.cc/VLQ5PyzX/Xnip2023-05-09-13-43-42.png?ssl=1)
 * Thank You
 *   Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/)
    In
   reply to: [[Jeg Kit for Elementor – Powerful Addons for Elementor, Widgets & Templates for WordPress] Uncaught TypeError: Illegal invocation](https://wordpress.org/support/topic/uncaught-typeerror-illegal-invocation-2/)
 *  Thread Starter [fdtw](https://wordpress.org/support/users/fdtw/)
 * (@fdtw)
 * [3 years ago](https://wordpress.org/support/topic/uncaught-typeerror-illegal-invocation-2/#post-16718737)
 * Hi, thanks for the reply.
   The plugin name is VikBooking and the error has occurred
   in the plugin backend when I try to open popup menu.
 * I put in `../wp-content/plugins/jeg-elementor-kit/helper.php:542`, `jkit_remove_form_control()`
   function
 *     ```wp-block-code
       add_filter( 'jkit_remove_form_control_conditions', 'callback' ); 
       ```
   
 * but it returns the error
 *     ```wp-block-code
       Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'callback' not found or invalid function name in /home/customer/www/sitename/public_html/wp-includes/class-wp-hook .php online 308
       Warning: Cannot modify header information - headers already sent by (output started at /home/customer/www/sitename/public_html/wp-includes/class-wp-hook.php:308) in /home/customer/www/sitename/ public_html/wp-admin/admin-header.php online 9
       ```
   
 * did I do something wrong?
 * Thank You

Viewing 3 replies - 1 through 3 (of 3 total)