Fatal error: Uncaught TypeError: Argument 2 passed to AV_Default_Content_Manager::display_post_state() must be an instance of WP_Post, null given, called in /membri/reflex/wp-includes/class-wp-hook.php on line 287 and defined in /membri/.dummy/master/wordpress/wp-content/plugins/altervista/classes/class-av-default-content-manager.php:73 Stack trace: #0 /membri/reflex/wp-includes/class-wp-hook.php(287): AV_Default_Content_Manager::display_post_state(Arr ay, NULL) #1 /membri/reflex/wp-includes/plugin.php(206): WP_Hook->apply_filters(Array, Array) #2 /membri/reflex/wp-admin/includes/template.php(2170): apply_filters('display_post_st...', Array, NULL) #3 /membri/reflex/wp-includes/nav-menu.php(823): get_post_states(NULL) #4 [internal function]: wp_setup_nav_menu_item(Object(WP_Post)) #5 /membri/reflex/wp-includes/nav-menu.php(749): array_map('wp_setup_nav_me...', Array) #6 /membri/reflex/wp-includes/class-wp-customize-nav-menus.php(734): wp_get_nav_menu_items(Object(WP_Term)) #7
/membri/reflex/wp-includes/class-wp-hook.php(287 in /membri/.dummy/master/wordpress/wp-content/plugins/altervista/classes/class-av-default-content-manager.php on line
73