Title: Plugin breaks WP admin panels Last modified: June 30, 2019 --- # Plugin breaks WP admin panels * [julieng31](https://wordpress.org/support/users/julieng31/) * (@julieng31) * [6 years, 11 months ago](https://wordpress.org/support/topic/plugin-breaks-wp-admin-panels/) * Hello, * thanks for the work done on this plugin. * My configuration is : WP5.2.2 and PHP 7.3. I am using Subpages Extended 1.6.2. * This version breaks different WP admin panels (I try to translate the panel names since my WP in not in English) : * appearance / customize * appearance / header* appearance / background Viewing 6 replies - 1 through 6 (of 6 total) * Thread Starter [julieng31](https://wordpress.org/support/users/julieng31/) * (@julieng31) * [6 years, 11 months ago](https://wordpress.org/support/topic/plugin-breaks-wp-admin-panels/#post-11694286) * Hello, * I have found that this comes from a compatibility issue with plugin “The Events Calendar”. * Thread Starter [julieng31](https://wordpress.org/support/users/julieng31/) * (@julieng31) * [6 years, 11 months ago](https://wordpress.org/support/topic/plugin-breaks-wp-admin-panels/#post-11694287) * If it helps, here is the post I have written on “The Events Calendar” support: [post](https://wordpress.org/support/topic/error-returned-by-wp/#post-11694283). - This reply was modified 6 years, 11 months ago by [julieng31](https://wordpress.org/support/users/julieng31/). * [TRILOS new media](https://wordpress.org/support/users/trilos/) * (@trilos) * [6 years, 7 months ago](https://wordpress.org/support/topic/plugin-breaks-wp-admin-panels/#post-12066051) * Same here, together with Plugin Subpages Extended (as mentioned first by julieng31). Problems occur only when both plugins are activated: /wp-admin/widgets.php shows no Widget Areas /wp-admin/customize.php?return=%2Fwp-admin%2Fwidgets.php shows the Options (Metabox) of Plugin Subpages Extended. * Technical Error Message by WP Core: * ``` Ein Fehler vom Typ E_ERROR wurde in der Zeile 16 der Datei (...)/web/wp-content/plugins/wp-nested-pages/app/Entities/Post/PrivatePostParent.php verursacht. Fehlermeldung: Uncaught ArgumentCountError: Too few arguments to function NestedPages\Entities\Post\PrivatePostParent::metabox(), 1 passed in (...)/web/wp-includes/class-wp-hook.php on line 286 and exactly 3 expected in (...)/web/wp-content/plugins/wp-nested-pages/app/Entities/Post/PrivatePostParent.php:16 Stack trace: #0 (...)/web/wp-includes/class-wp-hook.php(286): NestedPages\Entities\Post\PrivatePostParent->metabox(' ``` * WordPress 5.2.4 Theme Divi Version: 4.0.3 php 7.3.10 Nested Pages Version: 3.1.7 Subpages Extended Version: 1.6.4 * See also [https://wordpress.org/support/topic/conflict-with-plugin-subpages-extended/#post-12066067](https://wordpress.org/support/topic/conflict-with-plugin-subpages-extended/#post-12066067) - This reply was modified 6 years, 7 months ago by [TRILOS new media](https://wordpress.org/support/users/trilos/). * [toto](https://wordpress.org/support/users/toto/) * (@toto) * [6 years, 7 months ago](https://wordpress.org/support/topic/plugin-breaks-wp-admin-panels/#post-12130942) * I have this error: Is a conflict between Nested Pages and Subpages Extended [https://bg.wordpress.org/plugins/wp-nested-pages/](https://bg.wordpress.org/plugins/wp-nested-pages/) * Parent (Subpages of): ? Fatal error: Uncaught ArgumentCountError: Too few arguments to function NestedPages\Entities\Post\PrivatePostParent::metabox(), 1 passed in /home/###/#####/wp-includes/class-wp-hook.php on line 288 and exactly 3 expected in /home/###/#####/wp-content/plugins/wp-nested-pages/app/Entities/Post/PrivatePostParent. php:16 Stack trace: #0 /home/###/#####/wp-includes/class-wp-hook.php(288): NestedPages\ Entities\Post\PrivatePostParent->metabox(‘form(A in /home/###/#####/wp-content/ plugins/wp-nested-pages/app/Entities/Post/PrivatePostParent.php on line 16 * Please help * [TRILOS new media](https://wordpress.org/support/users/trilos/) * (@trilos) * [6 years, 7 months ago](https://wordpress.org/support/topic/plugin-breaks-wp-admin-panels/#post-12146706) * WP 5.3 sends a mail about technical problems (“recovery info”): * (…) * ``` Fehler-Details ============== Ein Fehler vom Typ E_ERROR wurde in der Zeile 16 der Datei /var/www/vhosts//web/wp-content/plugins/wp-nested-pages/app/Entities/Post/PrivatePostParent.php verursacht. Fehlermeldung: Uncaught ArgumentCountError: Too few arguments to function NestedPages\Entities\Post\PrivatePostParent::metabox(), 1 passed in /var/www/vhosts//web/wp-includes/class-wp-hook.php on line 288 and exactly 3 expected in /var/www/vhosts//web/wp-content/plugins/wp-nested-pages/app/Entities/Post/PrivatePostParent.php:16 Stack trace: #0 /var/www/vhosts//web/wp-includes/class-wp-hook.php(288): NestedPages\Entities\Post\PrivatePostParent->metabox('#### ``` - This reply was modified 6 years, 7 months ago by [TRILOS new media](https://wordpress.org/support/users/trilos/). * [Ahto](https://wordpress.org/support/users/ahtonaris/) * (@ahtonaris) * [6 years, 1 month ago](https://wordpress.org/support/topic/plugin-breaks-wp-admin-panels/#post-12825550) * Encountered the same fatal error and tracked it down to line 38 in ‘subpages- extended/subpages-extended-util-dropdown-pages.php’ (plugin version 1.6.4). * Line 38 content: * `$output = apply_filters( 'wp_dropdown_pages', $output );` * This filter should have 3 arguments instead of one (source: [https://developer.wordpress.org/reference/hooks/wp_dropdown_pages/](https://developer.wordpress.org/reference/hooks/wp_dropdown_pages/)) * Adding missing arguments solved the fatal error problem for me: * `$output = apply_filters( 'wp_dropdown_pages', $output, $r, $pages );` - This reply was modified 6 years, 1 month ago by [Ahto](https://wordpress.org/support/users/ahtonaris/). Reason: improve readability Viewing 6 replies - 1 through 6 (of 6 total) The topic ‘Plugin breaks WP admin panels’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/subpages-extended.svg) * [Subpages Extended](https://wordpress.org/plugins/subpages-extended/) * [Frequently Asked Questions](https://wordpress.org/plugins/subpages-extended/#faq) * [Support Threads](https://wordpress.org/support/plugin/subpages-extended/) * [Active Topics](https://wordpress.org/support/plugin/subpages-extended/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/subpages-extended/unresolved/) * [Reviews](https://wordpress.org/support/plugin/subpages-extended/reviews/) * 6 replies * 3 participants * Last reply from: [Ahto](https://wordpress.org/support/users/ahtonaris/) * Last activity: [6 years, 1 month ago](https://wordpress.org/support/topic/plugin-breaks-wp-admin-panels/#post-12825550) * Status: not resolved