wordpress - PHP error with versions 7.4+ ValueError: Unknown format specifier "C" in

Why am I getting sprintf(): Too few arguments here php error here while trying to use this in items_wrap on wp_nav_menu()?

$menu = wp_get_nav_menu_object('primary-menu');

$navId = $menu->term_id;
$menuId = 'menu_' . $navId;

$navUrl = get_field('social_media_url', $menuId);
$navImg = get_field('social_media_img', $menuId);

if ($navUrl && $navImg) {
     $socialOption = '<ul id="%s" class="%s">%s<li class="menu-social-option"><a href="' . esc_attr($navUrl) . '" target="_blank"><img src="' . esc_attr($navImg['url'])  . '"></a></li></ul>';
} else {
    $socialOption = '<ul id="%1$s" class="%2$s">%3$s</ul>';
}

$navArray = array(
                'theme_location' => 'primary', // Defined when registering the menu
                'menu_id'        => 'primary-menu',
                'container'      => false,
                'depth'          => 2,
                'items_wrap'     => $socialOption,
                'menu_class'     => 'navbar-nav ml-auto',
                'walker'         => new Bootstrap_NavWalker(), // This controls the display of the Bootstrap Navbar
                'fallback_cb'    => 'Bootstrap_NavWalker::fallback', // For menu fallback
            );

wp_nav_menu($navArray);
Copy code

When I remove esc_url($navUrl) then I get this type of error uncaught ValueError: Unknown format specifier "C" in. This only happens with PHP versions 7.4+

Cheers

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