createTRPCNext config ctx always returns undefined.

export const trpc = createTRPCNext<AppRouter>({
  config({ ctx }) {
    return {
      transformer,
      links: [
        loggerLink({
          enabled: (opts) => process.env.NODE_ENV === "development" || (opts.direction === "down" && opts.result instanceof Error),
        }),
        httpBatchLink({
          url: `${getBaseUrl()}/api/trpc`,
          headers() {
            if (!ctx || !ctx.req || !ctx.res) {
              return {};
            }
            const cookies = new Cookies(ctx.req, ctx.res);
            const token = cookies.get("jwt");
            return {
              Authorization: token ? `Bearer ${token}` : "",
            };
          },
        }),
      ],
    };
  },
});