Title: PHP warning in plugin
Last modified: August 24, 2016

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# PHP warning in plugin

 *  Resolved [Ramzzes](https://wordpress.org/support/users/ramzzes/)
 * (@ramzzes)
 * [11 years, 1 month ago](https://wordpress.org/support/topic/php-warning-in-plugin/)
 * PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback,
   class ‘R3DF_Dashboard_Language_Switcher’ does not have a method ‘on_admin_bar_page_lang’
   in /home/username/www/example.com/wp-includes/plugin.php on line 571″
 * [https://wordpress.org/plugins/r3df-dashboard-language-switcher/](https://wordpress.org/plugins/r3df-dashboard-language-switcher/)

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

 *  Plugin Author [Rick Radko](https://wordpress.org/support/users/r3df/)
 * (@r3df)
 * [11 years, 1 month ago](https://wordpress.org/support/topic/php-warning-in-plugin/#post-6071144)
 * Hi, it’s fixed in the next release that I’m working on and I’ll have out by the
   end of the weekend.
 *  Thread Starter [Ramzzes](https://wordpress.org/support/users/ramzzes/)
 * (@ramzzes)
 * [11 years, 1 month ago](https://wordpress.org/support/topic/php-warning-in-plugin/#post-6071145)
 * Thanks!

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

The topic ‘PHP warning in plugin’ is closed to new replies.

 * ![](https://ps.w.org/r3df-dashboard-language-switcher/assets/icon-256x256.png?
   rev=1131722)
 * [R3DF Dashboard Language Switcher](https://wordpress.org/plugins/r3df-dashboard-language-switcher/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/r3df-dashboard-language-switcher/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/r3df-dashboard-language-switcher/)
 * [Active Topics](https://wordpress.org/support/plugin/r3df-dashboard-language-switcher/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/r3df-dashboard-language-switcher/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/r3df-dashboard-language-switcher/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [Ramzzes](https://wordpress.org/support/users/ramzzes/)
 * Last activity: [11 years, 1 month ago](https://wordpress.org/support/topic/php-warning-in-plugin/#post-6071145)
 * Status: resolved