mix do ecto.create, ecto.migrate

warning: redefining module ConfigHelper (current version defined in memory)
  config/config_helper.exs:1

** (Protocol.UndefinedError) protocol Enumerable not implemented for nil of type 
Atom. This protocol is implemented for the following type(s): 

DBConnection.PrepareStream, DBConnection.Stream, Date.Range, Ecto.Adapters.SQL.Stream, File.Stream, Floki.HTMLTree, Flow, Function, GenEvent.Stream, HashDict, HashSet, IO.Stream, Indexer.BoundQueue, Jason.OrderedObject, List, Map, MapSet, Postgrex.Stream, Range, Stream, Timex.Interval
    (elixir 1.14.3) lib/enum.ex:1: Enumerable.impl_for!/1
    (elixir 1.14.3) lib/enum.ex:166: Enumerable.reduce/3
    (elixir 1.14.3) lib/enum.ex:4307: Enum.reverse/1
    (elixir 1.14.3) lib/keyword.ex:202: Keyword.new/2
    (explorer 5.1.1) lib/explorer/repo/config_helper.ex:47: Explorer.Repo.ConfigHelper.extract_parameters/1
    (explorer 5.1.1) lib/explorer/repo/config_helper.ex:25: Explorer.Repo.ConfigHelper.get_db_config/1
    (explorer 5.1.1) lib/explorer/repo.ex:20: Explorer.Repo.init/2
    (ecto 3.9.4) lib/ecto/repo/supervisor.ex:25: Ecto.Repo.Supervisor.runtime_config/4

See also

• mix [ do ]
• BlockScout, manual deployment, BlockScout variables, Logs