Type 'Handler<Req, Res>' is not assignable to type 'Handler'.

Argument of type 'App<Req, Res> | Handler<Req, Res>' is not assignable to parameter of type 'App<Req, Res> | Handler'.

Argument of type '<Req extends Request = Request, Res extends Response = Response<unknown>>(fn: App<Req, Res> | Handler) => SyncHandler<unknown, unknown> | ((req: Req, res: Res, next?: NextFunction) => void)' is not assignable to parameter of type '(value: App<Req, Res> | Handler<Req, Res>, index: number, array: (App<Req, Res> | Handler<Req, Res>)[]) => SyncHandler<...> | ((req: Req, res: Res, next?: NextFunction | undefined) => void)'.