unicornの起動ができなくなったので、エラーを解決したい

ruby on rails でアプリを作成し、
AWS、EC２を使ってデプロイしているところです。

macで作成してます。

(デプロイ編②)世界一丁寧なAWS解説。EC2を利用して、RailsアプリをAWSにあげるまで

を参考に進めています。
unicornを起動したく、

$  bundle exec unicorn_rails -c /var/www/rails/アプリ/config/unicorn.conf.rb -D -E productio

をすると

master failed to start, check stderr log for details

と出てしまい、エラーログを確認すると、

[2020-01-16T08:46:44.496488 #11125]  INFO -- : Refreshing Gem list
config.eager_load is set to nil. Please update your config/environments/*.rb files accordingly:

  * development - set it to false
  * test - set it to false (unless you use a tool that preloads your test environment)
  * production - set it to true

bundler: failed to load command: unicorn_rails (/home/○○○○/.rbenv/versions/2.6.5/bin/unicorn_rails)
ArgumentError: Missing `secret_key_base` for 'productio' environment, set this string with `rails credentials:edit`
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:585:in `validate_secret_key_base'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:432:in `secret_key_base'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/devise-4.6.2/lib/devise/secret_key_finder.rb:24:in `key_exists?'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/devise-4.6.2/lib/devise/secret_key_finder.rb:16:in `find'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/devise-4.6.2/lib/devise/rails.rb:37:in `block in <class:Engine>'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `instance_exec'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `run'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:61:in `block in run_initializers'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/2.6.0/tsort.rb:228:in `block in tsort_each'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/2.6.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/2.6.0/tsort.rb:431:in `each_strongly_connected_component_from'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/2.6.0/tsort.rb:349:in `block in each_strongly_connected_component'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/2.6.0/tsort.rb:347:in `each'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/2.6.0/tsort.rb:347:in `call'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/2.6.0/tsort.rb:347:in `each_strongly_connected_component'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/2.6.0/tsort.rb:226:in `tsort_each'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/2.6.0/tsort.rb:205:in `tsort_each'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:60:in `run_initializers'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:361:in `initialize!'
  /var/www/rails/○○○○/config/environment.rb:5:in `<top (required)>'
  config.ru:4:in `require_relative'
  config.ru:4:in `block in <main>'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:55:in `instance_eval'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:55:in `initialize'
  config.ru:1:in `new'
  config.ru:1:in `<main>'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/unicorn-5.4.1/lib/unicorn.rb:56:in `eval'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/unicorn-5.4.1/lib/unicorn.rb:56:in `block in builder'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/unicorn-5.4.1/bin/unicorn_rails:139:in `block in rails_builder'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/unicorn-5.4.1/lib/unicorn/http_server.rb:795:in `build_app!'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/unicorn-5.4.1/lib/unicorn/http_server.rb:139:in `start'
  /home/○○○○/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/unicorn-5.4.1/bin/unicorn_rails:209:in `<top (required)>'
  /home/○○○○/.rbenv/versions/2.6.5/bin/unicorn_rails:23:in `load'
  /home/○○○○/.rbenv/versions/2.6.5/bin/unicorn_rails:23:in `<top (required)>'

になります、ArgumentErrorで検索かけたのですがうまく見つからず、、、
どなたか、解決策かヒントをいただけたらと思います。
よろしくお願いします。