React Realtime subscription not working

useEffect(() => {
    console.log("listening");
    supabase
      .channel("public:messages")
      .on(
        "postgres_changes",
        { event: "INSERT", schema: "public", table: "messages" },
        (payload) => {
          console.log("Change received!", payload);
        }
      )
      .subscribe((status) => console.log(status));
  }, []);