Title: FATAL ERROR saving menu
Last modified: June 11, 2026

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# FATAL ERROR saving menu

 *  [alpium](https://wordpress.org/support/users/alpium/)
 * (@alpium)
 * [1 day, 10 hours ago](https://wordpress.org/support/topic/fatal-error-saving-menu/)
 * **Fatal error**: Uncaught ValueError: array_combine(): Argument #1 ($keys) and
   argument #2 ($values) must have the same number of elements in /home/tyvalmf/
   www/wp-content/plugins/polylang/src/nav-menu.php:133 Stack trace: #0 /home/tyvalmf/
   www/wp-content/plugins/polylang/src/nav-menu.php(133): array_combine(Array, Array)#
   1 /home/tyvalmf/www/wp-content/plugins/polylang/src/admin/admin-nav-menu.php(
   190): PLL_Nav_Menu->explode_location(‘primary___en___…’) #2 /home/tyvalmf/www/
   wp-content/plugins/polylang/src/admin/admin-nav-menu.php(240): PLL_Admin_Nav_Menu-
   >update_nav_menu_locations(Array) #3 /home/tyvalmf/www/wp-includes/class-wp-hook.
   php(343): PLL_Admin_Nav_Menu->pre_update_option_theme_mods(Array) #4 /home/tyvalmf/
   www/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array) #5 /home/
   tyvalmf/www/wp-includes/option.php(899): apply_filters(‘pre_update_opti…’, Array,
   Array, ‘theme_mods_enfa…’) #6 /home/tyvalmf/www/wp-includes/theme.php(1125): 
   update_option(‘theme_mods_enfa…’, Array) #7 /home/tyvalmf/www/wp-admin/nav-menus.
   php(467): set_theme_mod(‘nav_menu_locati…’, Array) #8 {main} thrown in **/home/
   tyvalmf/www/wp-content/plugins/polylang/src/nav-menu.php** on line **133**
   PHP
   8.4Worpress 7.0Polylang 3.8.4

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 * 0 replies
 * 1 participant
 * Last reply from: [alpium](https://wordpress.org/support/users/alpium/)
 * Last activity: [1 day, 10 hours ago](https://wordpress.org/support/topic/fatal-error-saving-menu/)
 * Status: not resolved