http_util.timestamp/0 is undefined

[davehorner]

voltone/x509#63

[debug] Downloading esbuild from https://registry.npmjs.org/esbuild-windows-64/-/esbuild-windows-64-0.14.29.tgz         [error] Task #PID<0.563.0> started from LightsOutGameWeb.Endpoint terminating                                           ** (UndefinedFunctionError) function :http_util.timestamp/0 is undefined (module :http_util is not available)               (inets 9.1.0.1) :http_util.timestamp()                                                                                  (inets 9.1.0.1) httpc.erl:750: :httpc.handle_request/9                                                                  (esbuild 0.5.0) lib/esbuild.ex:297: Esbuild.fetch_body!/1                                                               (esbuild 0.5.0) lib/esbuild.ex:209: Esbuild.install/0                                                                   (esbuild 0.5.0) lib/esbuild.ex:189: Esbuild.install_and_run/2                                                           (phoenix 1.6.15) lib/phoenix/endpoint/watcher.ex:19: Phoenix.Endpoint.Watcher.watch/2                                   (elixir 1.16.3) lib/task/supervised.ex:101: Task.Supervised.invoke_mfa/2                                            Function: &Phoenix.Endpoint.Watcher.watch/2                                                                                 Args: ["esbuild", {Esbuild, :install_and_run, [:default, ["--sourcemap=inline", "--watch"]]}]