Getting session null in tanstack start beforeLoad

// src/routes/__root.tsx
const getSession = createServerFn({ method: "GET" }).handler(() => {
    return authClient.getSession({
        fetchOptions: { headers: getRequestHeaders() },
    });
});

export const Route = createRootRouteWithContext<MyRouterContext>()({
    beforeLoad: async () => {
        const session = await getSession();

        return { ...session.data };
    },
})

// src/routes/_session.ts - used protecting auth required routes
import { createFileRoute } from "@tanstack/react-router";

export const Route = createFileRoute("/_session")({
    beforeLoad: ({ context }) => {
        if (!context.user) {
            console.log("no user in session, redirecting to /login");
        } else {
            console.log("user in session:", context.user);
        }
    },
});