code should be like this
$menu_arial_label = '';
foreach( get_terms('nav_menu') as $nav_menu ) {
if ( $nav_menu->slug === $menu ) {
$menu_arial_label = 'aria-label= "' . $menu. '"';
break;
}
}
return wp_nav_menu(
[
'container' => '',
'menu_id' => 'responsive-menu-pro',
'menu_class' => null,
'menu' => $menu && !$options['theme_location_menu'] ? $menu : null,
'depth' => $options['menu_depth'] ? $options['menu_depth'] : 0,
'theme_location' => $options['theme_location_menu'] ? $options['theme_location_menu'] : null,
'walker' => $walker,
'items_wrap' => '<ul id="%1$s" role="menubar" '. $menu_arial_label .'>%3$s</ul>',
'echo' => false
]
);