ActiveModel Error #raw_type attribute raw_type Ruby on Rails 7.0.10 Since v6.1.7.10 Available in: v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2 Compare with: … v6.1.7.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2 The raw value provided as the second parameter when calling +errors#add+