DEPRECATION WARNING: ActiveSupport::Multibyte::Unicode#downcase is deprecated and will be removed from Rails 6.1. Use String methods directly. (called from unicode_downcase at /vendor/bundle/ruby/2.6.0/bundler/gems/acts-as-taggable-on-d01c315f616b/lib/acts_as_taggable_on/tag.rb:126)
ref rails/rails@619b2ae