Rails: How to fix “Missing secret_key_base for ‘production’ environment”

Keep default the secrets.yml file

# config/secrets.yml
production:
  secret_key_base: <%= ENV["SECRET_KEY_BASE"] %>
  aws_secret: abcde
  some_password: abcdex

development:
  secret_key_base: static_secret_key
  aws_secret: abcde

test:
  secret_key_base: static_test_secret_key


#not_indented: key for all env in once
secret_key_base: global_key_for_all_env

RAILS_ENV=production SECRET_KEY_BASE=production_test_key rails c

If using Rails 5.2.0, add to production env below, check this LINK

config.require_master_key = true    #config/environments/production.rb