Kind tParams = Assure; export default async purpose Challenge( params : params: tParams ) const slug = await params; const productID = slug[one]; // other code right here It seems like the kind for params is producing concerns, maybe since Future.js expects a special framework for params. A future assertion https://alphawireless.com/future-proofing-american-utilities-why-900-mhz-is-critical-for-utility-communications/