Fatal Error

Hi,

After updating to WP 5.4.2, I found this error in the menu page in administration:
I need some urgent help!

Fatal error: Uncaught ArgumentCountError: Too few arguments to function um\admin\core\Admin_Navmenu::wp_nav_menu_item_custom_fields(), 4 passed in /home/bigbatti/public_html/wp-includes/class-wp-hook.php on line 287 and exactly 5 expected in /home/bigbatti/public_html/wp-content/plugins/ultimate-member/includes/admin/core/class-admin-navmenu.php:59 Stack trace: #0 /home/bigbatti/public_html/wp-includes/class-wp-hook.php(287): um\admin\core\Admin_Navmenu->wp_nav_menu_item_custom_fields('141', Object(WP_Post), 0, Object(stdClass)) #1 /home/bigbatti/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #2 /home/bigbatti/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #3 /home/bigbatti/public_html/wp-content/themes/avaia/framework/php/class-megamenu.php(534): do_action('wp_nav_menu_ite...', '141', Object(WP_Post), 0, Object(stdClass)) #4 /home/bigbatti/public_html/wp-includes/class-wp-walker.php(144): avia_backend_walker->start_el('', Object(WP_Post), 0, Object(stdClass)) #5 /h in /home/bigbatti/public_html/wp-content/plugins/ultimate-member/includes/admin/core/class-admin-navmenu.php on line 59