Title: Warning: call_user_func_array() Last modified: August 20, 2016 --- # Warning: call_user_func_array() * [jzmwebdevelopment](https://wordpress.org/support/users/jzmwebdevelopment/) * (@jzmwebdevelopment) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/) * Hello, * How do I fix this error? * `Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'woocommerce_price_filter_init' not found or invalid function name in/ home/baby/public_html/wp-includes/plugin.php on line 406` * [http://wordpress.org/extend/plugins/woocommerce/](http://wordpress.org/extend/plugins/woocommerce/) Viewing 15 replies - 1 through 15 (of 44 total) 1 [2](https://wordpress.org/support/topic/warning-call_user_func_array-12/page/2/?output_format=md) [3](https://wordpress.org/support/topic/warning-call_user_func_array-12/page/3/?output_format=md) [→](https://wordpress.org/support/topic/warning-call_user_func_array-12/page/2/?output_format=md) * [jeroenvanderschenk](https://wordpress.org/support/users/jeroenvanderschenk/) * (@jeroenvanderschenk) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528951) * Hmmm, I have exactly the same problem. Appeared after updating the Woocommerce plugin. Anyone? * [a_bustamy](https://wordpress.org/support/users/a_bustamy/) * (@a_bustamy) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528954) * the same with me , so i am going to remove this update and use the old one for now * [jeroenvanderschenk](https://wordpress.org/support/users/jeroenvanderschenk/) * (@jeroenvanderschenk) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528955) * [@a_bustamy](https://wordpress.org/support/users/a_bustamy/) Would like to do that too. Probably a very stupid question: Any idea where I can find the old one? * [a_bustamy](https://wordpress.org/support/users/a_bustamy/) * (@a_bustamy) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528956) * yes i can give it to you send me email to [a_bustamy@hotmail.com](https://wordpress.org/support/topic/warning-call_user_func_array-12/a_bustamy@hotmail.com?output_format=md) and i will send it to you now * [jeroenvanderschenk](https://wordpress.org/support/users/jeroenvanderschenk/) * (@jeroenvanderschenk) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528957) * [@a_bustamy](https://wordpress.org/support/users/a_bustamy/) Thanks! Will send it right now… * [a_bustamy](https://wordpress.org/support/users/a_bustamy/) * (@a_bustamy) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528958) * SENT * Thread Starter [jzmwebdevelopment](https://wordpress.org/support/users/jzmwebdevelopment/) * (@jzmwebdevelopment) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528961) * Could you send it to me plz * [a_bustamy](https://wordpress.org/support/users/a_bustamy/) * (@a_bustamy) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528962) * SENT * [aryanduntley](https://wordpress.org/support/users/dunar21/) * (@dunar21) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528975) * Come on woo team. We expect great things from you… * [FllOb](https://wordpress.org/support/users/fllob/) * (@fllob) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528976) * I’ve got the same problem too. * [supton](https://wordpress.org/support/users/supton/) * (@supton) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528983) * I’ve just run the upgrade and get exactly the same issue. Come on Woo, please help!! * [supton](https://wordpress.org/support/users/supton/) * (@supton) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528984) * I’ve just run the upgrade and get exactly the same issue. Come on Woo, please help!! * Whoops! Double post. that’s cos I’m panicking. * [supton](https://wordpress.org/support/users/supton/) * (@supton) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528985) * My error messages: * Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘woocommerce_price_filter_init’ was given in /homepages/36/d225513697/htdocs/chocbarwoo/wp-includes/plugin.php on line 406 * Warning: Cannot modify header information – headers already sent by (output started at /homepages/36/d225513697/htdocs/chocbarwoo/wp-includes/plugin.php:406) in / homepages/36/d225513697/htdocs/chocbarwoo/wp-includes/pluggable.php on line 876 * Is this what everyone else is getting? * [thecookiemonster](https://wordpress.org/support/users/thecookiemonster/) * (@thecookiemonster) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528992) * same here. * [jacuzzu](https://wordpress.org/support/users/jacuzzu/) * (@jacuzzu) * [13 years, 2 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/#post-3528995) * Warning: call_user_func_array () [Function.call-user-func-array]: Primo argomento dovrebbe essere una richiamata valido, ‘woocommerce_price_filter_init’ stato dato in / homepages/36/d225513697/htdocs/chocbarwoo/wp-includes/plugin. php on line 406 * Attenzione: Non è possibile modificare le informazioni di intestazione – headers already sent by (output iniziato a / homepages/36/d225513697/htdocs/chocbarwoo/ wp-includes/plugin.php: 406) in / homepages/36/d225513697/htdocs/chocbarwoo/wp- includes / pluggable.php on line 876 * same here Viewing 15 replies - 1 through 15 (of 44 total) 1 [2](https://wordpress.org/support/topic/warning-call_user_func_array-12/page/2/?output_format=md) [3](https://wordpress.org/support/topic/warning-call_user_func_array-12/page/3/?output_format=md) [→](https://wordpress.org/support/topic/warning-call_user_func_array-12/page/2/?output_format=md) The topic ‘Warning: call_user_func_array()’ is closed to new replies. * ![](https://ps.w.org/woocommerce/assets/icon.svg?rev=3234504) * [WooCommerce](https://wordpress.org/plugins/woocommerce/) * [Frequently Asked Questions](https://wordpress.org/plugins/woocommerce/#faq) * [Support Threads](https://wordpress.org/support/plugin/woocommerce/) * [Active Topics](https://wordpress.org/support/plugin/woocommerce/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/woocommerce/unresolved/) * [Reviews](https://wordpress.org/support/plugin/woocommerce/reviews/) * 44 replies * 24 participants * Last reply from: [FleishmanDesign](https://wordpress.org/support/users/fleishmandesign/) * Last activity: [12 years, 3 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-12/page/3/#post-3529090) * Status: not resolved