Error: Unbound module Js_of_ocaml_lwt

I’m trying to test the cubes example of js_of_ocaml.

While in the cubes directory, I enter

ocamlfind ocamlc -package js_of_ocaml -package js_of_ocaml.ppx -linkpkg -o cubes.byte cubes.ml

in the terminal, then RET, which produces the below output:

Error : Unbound module Js_of_ocaml_lwt

What step(s) do I need to take to resolve this?

Thank you!

UPDATE:

I was able to get it working by using:

ocamlfind ocamlc -package js_of_ocaml -package js_of_ocaml-ppx -package js_of_ocaml-lwt -linkpkg -o cubes.byte cubes.ml

instead of the tutorial-provided:

ocamlfind ocamlc -package js_of_ocaml -package js_of_ocaml-ppx -linkpkg -o cubes.byte cubes.ml