Fatal error: Uncaught ArgumentCountError: Too few arguments to function wp_get_post_parent_id(), 0 passed in /home/customer/www/solstiziodestate.it/public_html/wp-content/themes/solstizio/inc/custom.php on line 37 and exactly 1 expected in /home/customer/www/solstiziodestate.it/public_html/wp-includes/post.php:7069 Stack trace: #0 /home/customer/www/solstiziodestate.it/public_html/wp-content/themes/solstizio/inc/custom.php(37): wp_get_post_parent_id() #1 /home/customer/www/solstiziodestate.it/public_html/wp-includes/class-wp-hook.php(289): special_nav_class(Array, Object(WP_Post)) #2 /home/customer/www/solstiziodestate.it/public_html/wp-includes/plugin.php(206): WP_Hook->apply_filters(Array, Array) #3 /home/customer/www/solstiziodestate.it/public_html/wp-includes/class-walker-nav-menu.php(153): apply_filters('nav_menu_css_cl...', Array, Object(WP_Post), Object(stdClass), 0) #4 /home/customer/www/solstiziodestate.it/public_html/wp-includes/class-wp-walker.php(144): Walker_Nav_Menu->start_el('<li id="menu-it...', Object(WP_ in /home/customer/www/solstiziodestate.it/public_html/wp-includes/post.php on line 7069