esy build errors

error2.sh

$ esy x Fetch
File "dune-project", line 5, characters 11-14:
5 | (using fmt 1.2)
               ^^^
Warning: Version 1.2 of integration with automatic formatters is not
supported until version 1.11 of the dune language.
There are no supported versions of this extension in version 1.0 of the dune
language.

# Unformatted Error Output:
# File "bin/Fetch.ml", line 31, characters 2-25:
# Error: Unbound value Piaf.Body.iter_string_s


 ERROR  bin/Fetch.ml:31 2-25 

28 ┆   let* response = Piaf.Client.Oneshot.get
29 ┆     ~config:{ Piaf.Config.default with follow_redirects = true } (Uri.of_string host)
30 ┆      in
31 ┆   Piaf.Body.iter_string_s (fun chunk -> Lwt_io.printf "%s" chunk) response.body
32 ┆ 
33 ┆ let () =
34 ┆   setup_log (Some Logs.Debug);

The value named Piaf.Body.iter_string_s can't be found. Could it be a typo?


error: command failed: 'refmterr' 'dune' 'build' '--promote-install-files' '--root' '.' '--only-package' 'hello-reason' (exited with 1)
esy-build-package: exiting with errors above...
error: build failed with exit code: 1
  
esy: exiting due to errors above

package.json

{
  "name": "hello-reason",
  "version": "0.1.0",
  "description": "Example Reason Esy Project",
  "license": "MIT",
  "esy": {
    "build": "dune build -p #{self.name}",
    "buildDev": "refmterr dune build --promote-install-files --root . --only-package #{self.name}",
    "NOTE": "Optional release Section. Customizes result of `esy release`",
    "release": {
      "bin": [
        "Hello"
      ]
    },
    "buildEnv": {
      "ODOC_SYNTAX": "re"
    }
  },
  "scripts": {
    "test": "esy x Hello",
    "format": "esy dune build @fmt --auto-promote",
    "doc": "esy dune build @doc"
  },
  "dependencies": {
    "@opam/dune": "*",
    "@opam/fmt": "*",
    "@opam/logs": "*",
    "@reason-native/console": "*",
    "@reason-native/pastel": "*",
    "@esy-ocaml/reason": ">= 3.4.0 < 3.6.0",
    "ocaml": "~4.8.1000",
    "@reason-native-web/esy-openssl": ">= 1.1.1006 < 2.0.0",
    "@reason-native-web/piaf": ">= 1.2.0 < 2.0.0"
  },
  "devDependencies": {
    "@opam/merlin": "*",
    "@reason-native/rely": "*",
    "refmterr": "*",
    "ocaml": "~4.8.1000",
    "@opam/odoc": "*"
  }
}