Running migration from release tzdata error

I was following the blog post by platformatec to be able to run migrations from my release. When I run the command
rel/my_app/bin/my_app command Elixir.MyApp.Release.Tasks migrate

I get the following error:
{"init terminating in do_boot",{function_clause,[{'Elixir.MyApp.Release.Tasks',check_started_response,[{error,{tzdata,{"no such file or directory","tzdata.app"}}}],[{file,"web/scripts/release_tasks.ex"},{line,17}]},{'Elixir.Enum','-map/2-lists^map/1-0-',2,[{file,"lib/enum.ex"},{line,1088}]},{'Elixir.Enum','-map/2-lists^map/1-0-',2,[{file,"lib/enum.ex"},{line,1088}]},{'Elixir.MyApp.Release.Tasks',migrate,0,[{file,"web/scripts/release_tasks.ex"},{line,9}]},{init,start_it,1,[]},{init,start_em,1,[]}]}}

The script is as follows:

defmodule MyApp.Release.Tasks do
  @app :my_app

  def migrate do
    Application.load(@app) |> check_started_response()
    results = Enum.map(Application.spec(@app, :applications), &Application.load(&1))
    Enum.map(results, &check_started_response/1)
    results = Enum.map(Application.spec(@app, :applications), &Application.ensure_all_started(&1))
    Enum.map(results, &check_started_response/1)

    path = Application.app_dir(:cymbal, "priv/master_repo/migrations")
    Ecto.Migrator.run(MyApp.MasterRepo, path, :up, all: true)

    :init.stop()
  end

  defp check_started_response(:ok), do: :ok
  defp check_started_response({:ok, _}), do: :ok
  defp check_started_response({:error, {:already_loaded, _}}), do: :ok

end

Using the exact (with changes for my specific app) code from the platformatec blog basically gave me the same error but the above code is from another forum post I ran into.

Any help would be incredible!