Title: Warning “call_user_func_array()” re: “qw_admin_css" when WooCommerce installed
Last modified: August 30, 2016

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# Warning “call_user_func_array()” re: “qw_admin_css" when WooCommerce installed

 *  Resolved [Joel MMCC](https://wordpress.org/support/users/joel-mmcc/)
 * (@joel-mmcc)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-re-qw_admin_css-when-woocommerce-installed/)
 * We’re using the latest Query Wrangler under the latest WordPress. We installed
   the latest WooCommerce. When we go to their Setup Wizard or any other of their
   admin pages, we get this at the top of all such pages:
 * > **Warning:** call_user_func_array() expects parameter 1 to be a valid callback,
   > function ‘qw_admin_css’ not found or invalid function name in …**/wp-includes/
   > plugin.php** on line **503**
 * This function is, of course, defined in Query Wrangler (thus the “`qw_`” prefix).
   in `./admin/admin.php` to be precise (and referenced via an “`add_action`” call
   in `./query-wrangler.php`).
 * For now, since according to its name this function only affects CSS in the Admin
   panel for Query Wrangler, I’m going to ignore the warning and proceed with the
   WooCommerce setup. I’ll comment back here if there are any other issues. But 
   this does need to be addressed.
 * [https://wordpress.org/plugins/query-wrangler/](https://wordpress.org/plugins/query-wrangler/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Jonathan Daggerhart](https://wordpress.org/support/users/daggerhart/)
 * (@daggerhart)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-re-qw_admin_css-when-woocommerce-installed/#post-6569899)
 * This should be fixed in the new release (1.5.38)
 * Please let me know if you run into any issues.

Viewing 1 replies (of 1 total)

The topic ‘Warning “call_user_func_array()” re: “qw_admin_css" when WooCommerce 
installed’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [Jonathan Daggerhart](https://wordpress.org/support/users/daggerhart/)
 * Last activity: [10 years, 8 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-re-qw_admin_css-when-woocommerce-installed/#post-6569899)
 * Status: resolved