Got error saying api_key not found

[swriddle]

I define a rake task as this:

  task dev: :environment do
    api_key = ENV.fetch("MAILCHIMP_API_KEY")
    puts "is the api key even defined? #{api_key}"
    gibbon = Gibbon::Request.new(api_key: api_key, symbolize_keys: true, debug: true)
    data = gibbon.lists.retrieve
    puts "response? #{data}"
  end

% bundle exec rake email:dev
is the api key even defined? [[hex formatted api key]]
rake aborted!
Gibbon::GibbonError: You must set an api_key prior to making a call

The exception points to the data = gibbon.lists.retrieve line. What am I doing wrong here?

[swriddle]

I didn't realize the server indicator at the end of the api key was part of it. Adding that back resolves the issue.