Next.js dynamic routes forbidden

With next js latest version when trying to fetch data it goes forbidden :

export async function generateMetadata({ params }) { const page_slug = (await params)?.page_slug; const page = await customPageData(page_slug);

 const seo = await getSEO({
     title      : getTitle(page?.data?.page?.name),
     description: page?.data?.seo_content?.description,
     keywords   : page?.data?.seo_content?.keywords,
     image      : page?.data?.seo_image,
 });

 if (!page || page?.remark == 'page_not_found') {
     return notFound();
 }

 return seo;

}