2023-04-21 【Render】デプロイ時に `ActiveRecord::Encryption::Errors::Configuration (key_derivation_salt is not configured. Please configure it via credential active_record_encryption.key_derivation_salt or by setting config.active_record.encryption.key_derivation_salt):` zenn.dev の通り、 bin/rails db:encryption:init EDITOR=vi bin/rails credentials:edit --environment production