I have read the documentation on next.js about metadata and cannot find an answer to my question there or anywhere else for that matter so this is my last resort. Problem: I'm trying to generate metadata for a product page dynamically using next.js 13 app function as follows:

export async function generateMetadata({ params, searchParams }, parent) {

(code to generate down below variables)

 return {
        title: title,
        description: description,
        keywords: keywords,
        openGraph: {
            images: [
                imageUrl
            ], 
            title: title,
            description: description,
            url: 'products/' + params.slug,
            type: 'product',
        },
        alternates: {
            canonical: 'products/' + params.slug,
        } 
    } 
}

and i'm getting an error in the browser saying: "Error: Invalid OpenGraph type: product". If I set it to e.g. "website", it works but I want to be able to set it to product. How can i go about this?