Fatal error: Uncaught Error: Call to undefined function wp_generate_password() in /home/r0861530/public_html/takasaki-motorschool.co.jp/wp/wp-admin/includes/file.php:641 Stack trace: #0 /home/r0861530/public_html/takasaki-motorschool.co.jp/wp/wp-admin/includes/class-wp-filesystem-ftpext.php(112): wp_tempnam('/home/r0861530/...') #1 /home/r0861530/public_html/takasaki-motorschool.co.jp/wp/wp-content/plugins/responsive-menu/v4.0.0/inc/classes/class-theme-manager.php(436): WP_Filesystem_FTPext->get_contents('/home/r0861530/...') #2 /home/r0861530/public_html/takasaki-motorschool.co.jp/wp/wp-content/plugins/responsive-menu/v4.0.0/inc/classes/class-theme-manager.php(850): RMP\Features\Inc\Theme_Manager->get_themes_from_uploads() #3 /home/r0861530/public_html/takasaki-motorschool.co.jp/wp/wp-content/plugins/responsive-menu/responsive-menu.php(170): RMP\Features\Inc\Theme_Manager->get_menu_active_themes() #4 /home/r0861530/public_html/takasaki-motorschool.co.jp/wp/wp-content/plugins/responsive-menu/responsive-menu.php(185): rm_i in /home/r0861530/public_html/takasaki-motorschool.co.jp/wp/wp-admin/includes/file.php on line 641