fixed DEPRECATION WARNING: Rails.application.secrets

commit-id:9f758dec

config/initializers/secret_key_base.rb

@@ -7,7 +7,7 @@
 # This will have a few costs like for
 # example session becoming invalid on new devices and you can share cookies between multiple servers
 # However you can still use the ENV["SECRET_KEY_BASE"] and all this does not mater
-if Rails.application.secrets.secret_key_base.nil?
+if Rails.application.credentials.secret_key_base.nil?
   key_file = Rails.root.join("tmp/#{Rails.env}_secret.txt")
   unless File.exist?(key_file)
     random_key = SecureRandom.hex(64)