My 'Dynamic XML Sitemap for Laravel' is generating empty URLs – Laravel sitemap pros, help!

Hey everyone,

My 'Dynamic XML Sitemap for Laravel' has decided to play hide-and-seek with my URLs, and frankly, it's getting a bit cheeky. Instead of populating with actual routes, it's just giving me these lovely, empty <loc> tags. It's like it's mocking my SEO efforts!

Here's a peek at what it's generating:

<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
    <url>
        <loc></loc>
        <lastmod>2023-10-27T10:00:00+00:00</lastmod>
        <priority>1.0</priority>
    </url>
    <url>
        <loc></loc>
        <lastmod>2023-10-27T09:30:00+00:00</lastmod>
        <priority>0.8</priority>
    </url>
</urlset>

Any 'Laravel sitemap' experts out there who've tamed this beast before? What could be causing this, or what should I check?

Thanks in advance!