Deprecated features and undefined variable

[binkapS]

PHP Deprecated: Melbahja\Seo\Sitemap::__construct(): Implicitly marking parameter $options as nullable is deprecated, the explicit nullable type must be used instead in /home/gamerighq/htdocs/gamerighq.com/vendor/melbahja/seo/src/Sitemap.php on line 52
PHP Deprecated: Melbahja\Seo\Interfaces\SitemapIndexInterface::__construct(): Implicitly marking parameter $options as nullable is deprecated, the explicit nullable type must be used instead in
vendor/melbahja/seo/src/Interfaces/SitemapIndexInterface.php on line 13

In Sitemap.php line 200:

Undefined variable $name

[melbahja]

can you provide code to reproduce it ?

[binkapS]

$sitemap = new Sitemap(config('app.url'), ['save_path' => public_path('sitemap')]);
        $sitemap->links(['name' => 'categories.xml', 'images' => false], function ($map) {
            Category::all()->each(function ($category) use ($map) {
                $map->loc("/category/{$category->slug}")
                    ->freq('weekly')->priority('0.9')
                    ->lastMod($category->updated_at->toDateString());
            });
        });
 $sitemap->save();

It's a laravel project
The category class is a Model
PHP Version Info:

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