There is documentation about Asynchronous Page in the Next.js:

https://nextjs.org/docs/app/building-your-application/upgrading/version-15#asynchronous-page

Try that approach, which is in the Next.js documentation:

export default async function Challenge(
 props: {
  params: Promise<{ slug: string }>;
 }
) {
 const params = await props.params;
 const productID = params.slug[1];
 // const productID = params.slug;
 // other code here
}