Error running dune build

[JoaoVictorGI]

bun run dev
$ dune build && concurrently 'npm:vite-dev' 'npm:dune-watch'
File "dune", lines 49-53, characters 2-109:
49 |   (melange.emit
50 |    (target output)
51 |    (alias melange_ocaml)
52 |    (libraries app)
53 |    (module_systems (es6 mjs)))
Error: Library "melange" not found.
-> required by alias all
-> required by alias default
File "src/dune", line 6, characters 7-18:
6 |   (pps melange.ppx reason-react-ppx)))
           ^^^^^^^^^^^
Error: Library "melange.ppx" not found.
-> required by _build/default/src/App.re.pp.ml
-> required by alias src/all
-> required by alias default
File "src/bindings/dune", line 25, characters 7-18:
25 |   (pps melange.ppx)))
            ^^^^^^^^^^^
Error: Library "melange.ppx" not found.
-> required by _build/default/src/bindings/bindings.pp.ml
-> required by alias src/bindings/all
-> required by alias default
File "src/components/dune", line 15, characters 7-18:
15 |   (pps melange.ppx reason-react-ppx)))
            ^^^^^^^^^^^
Error: Library "melange.ppx" not found.
-> required by _build/default/src/components/Configuration.re.pp.ml
-> required by alias src/components/all
-> required by alias default
error: script "dev" exited with code 1

[davesnx]

Can you describe which steps you did? What versions of tools are you using?

It's very hard to help otherwise.

Thanks