Title: undefined function remove_meta_box() Last modified: October 2, 2024 --- # undefined function remove_meta_box() * Resolved [mbaierl](https://wordpress.org/support/users/mbaierl/) * (@mbaierl) * [1 year, 7 months ago](https://wordpress.org/support/topic/undefined-function-remove_meta_box/) * About once a day I receive this error message: * Error Details * An error of type E_ERROR was caused in line 174 of the file /var/www/vhosts/…/ wp-content/plugins/guest-author/guest-author.php. Error message: Uncaught Error: Call to undefined function remove_meta_box() in /var/www/vhosts/…/wp-content/ plugins/guest-author/guest-author.php:174 Stack trace: 0 /var/www/vhosts/…/wp- includes/class-wp-hook.php(324): BS_Guest_Author->remove_default_author_meta_box( Object(WP_Screen)) 1 /var/www/vhosts/…/wp-includes/class-wp-hook.php(348): WP_Hook- >apply_filters(NULL, Array) 2 /var/www/vhosts/…/wp-includes/plugin.php(517): WP_Hook->do_action(Array) 3 /var/www/vhosts/…/wp-admin/includes/class-wp-screen. php(424): do_action(‘current_screen’, Object(WP_Screen)) 4 /var/www/vhosts/…/ wp-content/plugins/wp-health/src/Services/RequestSettings.php(143): WP_Screen- >set_current_screen() 5 /var/www/vhosts/…/wp-content/plugins/wp-health/src/Core/ Kernel.php(409): WPUmbrella\Services\RequestSettings->adminLoaded() 6 /var/www/ vhosts/…/wp-includes/class-wp-hook.php(324): WPUmbrella\Core\Kernel::WPUmbrella\ Core{closure}(”) 7 /var/www/vhosts/…/wp-includes/class-wp-hook.php(348): WP_Hook- >apply_filters(”, Array) 8 /var/www/vhosts/…/wp-includes/plugin.php(517): WP_Hook- >do_action(Array) 9 /var/www/vhosts/…/wp-settings.php(722): do_action(‘wp_loaded’) 10 /var/www/vhosts/…/wp-config.php(180): require_once(‘/var/www/vhosts…’) 11 / var/www/vhosts/…/wp-load.php(50): require_once(‘/var/www/vhosts…’) 12 /var/www/ vhosts/…/wp-blog-header.php(13): require_once(‘/var/www/vhosts…’) 13 /var/www/ vhosts/…/index.php(17): require(‘/var/www/vhosts…’) 14 {main} * thrown * I know the function remove_meta_box is a core function and should exist, however it’s still called in a way where it does not. * Please fix or advise. Viewing 2 replies - 1 through 2 (of 2 total) * Plugin Author [Alexandru Tapuleasa](https://wordpress.org/support/users/talextech/) * (@talextech) * [1 year, 7 months ago](https://wordpress.org/support/topic/undefined-function-remove_meta_box/#post-18052894) * No one reported this so far so it has to be something specific to your setup. * I don’t have any ideas though, as you already mentioned remove_meta_box() is a core WordPress function but something could be loading just part of the WordPress files and somehow triggering Guest Author plugin but without having wp-admin/ includes/template.php loaded. I see something about a WPUmbrella class. Maybe one of their scans or features does that somehow, I don’t know 🙁 * [dvieira](https://wordpress.org/support/users/dvieira/) * (@dvieira) * [1 year, 3 months ago](https://wordpress.org/support/topic/undefined-function-remove_meta_box/#post-18286610) * Hello, The same thing is happening to me. I think the issue may lie with WP Umbrella. * ```wp-block-code Error DetailsAn error of type E_ERROR was caused in line 174 of the file /home/customer/www/xxx/public_html/wp-content/plugins/guest-author/guest-author.php. Error message: Uncaught Error: Call to undefined function remove_meta_box() in /home/customer/www/xxx/public_html/wp-content/plugins/guest-author/guest-author.php:174Stack trace: 0/home/customer/www/xxx/public_html/wp-includes/class-wp-hook.php(324): BS_Guest_Author->remove_default_author_meta_box(Object(WP_Screen))1/home/customer/www/xxx/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)2/home/customer/www/xxx/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)3/home/customer/www/xxx/public_html/wp-admin/includes/class-wp-screen.php(424): do_action('current_screen', Object(WP_Screen))4/home/customer/www/xxx/public_html/wp-content/plugins/wp-health/src/Services/RequestSettings.php(143): WP_Screen->set_current_screen()5/home/customer/www/xxx/public_html/wp-content/plugins/wp-health/src/Core/Kernel.php(409): WPUmbrella\Services\RequestSettings->adminLoaded()6/home/customer/www/xxx/public_html/wp-includes/class-wp-hook.php(324): WPUmbrella\Core\Kernel::WPUmbrella\Core{closure}('')7/home/customer/www/xxx/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array)8/home/customer/www/xxx/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)9/home/customer/www/xxx/public_html/wp-settings.php(726): do_action('wp_loaded')10/home/customer/www/xxx/public_html/wp-config.php(99): require_once('/home/customer/…')11/home/customer/www/xxx/public_html/wp-load.php(50): require_once('/home/customer/…')12/home/customer/www/xxx/public_html/wp-blog-header.php(13): require_once('/home/customer/…') 13/home/customer/www/xxx/public_html/index.php(17): require('/home/customer/…') 14{main}thrown ``` Viewing 2 replies - 1 through 2 (of 2 total) The topic ‘undefined function remove_meta_box()’ is closed to new replies. * ![](https://ps.w.org/guest-author/assets/icon-256x256.png?rev=2301810) * [Guest Author](https://wordpress.org/plugins/guest-author/) * [Frequently Asked Questions](https://wordpress.org/plugins/guest-author/#faq) * [Support Threads](https://wordpress.org/support/plugin/guest-author/) * [Active Topics](https://wordpress.org/support/plugin/guest-author/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/guest-author/unresolved/) * [Reviews](https://wordpress.org/support/plugin/guest-author/reviews/) * 2 replies * 3 participants * Last reply from: [dvieira](https://wordpress.org/support/users/dvieira/) * Last activity: [1 year, 3 months ago](https://wordpress.org/support/topic/undefined-function-remove_meta_box/#post-18286610) * Status: resolved