can not upgrade to Dataloader

[mydearxym]

hi there ~

i am upgrade absinthe from 1.4 to 1.5 on my project, the absinthe_ecto README says:

but when i follow the step, i got error:

env info:

      elixir 1.10.3
     -----
      {:phoenix, "~> 1.5.7"},
      {:phoenix_pubsub, "~> 2.0"},
      {:phoenix_html, "~> 2.14.3"},
      {:ecto_sql, "~> 3.5.4"},
      {:phoenix_ecto, "~> 4.2.1"},
      {:postgrex, "~> 0.15.8"},
      {:gettext, "~> 0.18.0"},
      {:plug_cowboy, "~> 2.4.1"},
      {:plug, "~> 1.11.0"},
      # GraphQl tool
      {:absinthe, "~> 1.5.5"},
      # {:absinthe_ecto, "~> 0.1.3"},
      {:absinthe_plug, "~> 1.5.4"},
      {:dataloader, "~> 1.0.7"},
     ...

[mydearxym]

simply remove the Absinthe.Ecto solve the problem, sorry for the bother