Configure goth by loading credentials from database

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1

I am trying to configure goth through a custom module by loading credentials from the database.

Config.exs

config :goth, config_module: Glific.Goth

goth.exs

defmodule Glific.Goth do
  use Goth.Config
  import Ecto.Query
  alias Glific.Repo
  alias Glific.Partners.Provider
  def init(config) do
    credentials = Repo.one(from u in Provider, where: ilike(u.name, "GOTH"), select: u.secrets)
    {:ok, Keyword.put(config, :json, credentials)}
  end
end

I am getting (RuntimeError) could not lookup Ecto repo Repo because it was not started or it does not exist