Hi @piffy 
참고로, 테스트 사이트에서 Animated Avatars(그리고 Cakeday 
)를 설치해 보았는데, 이 오류를 재현할 수 있을 것 같습니다. 
- 두 플러그인을 모두 설치하고 활성화합니다
- rails 콘솔에서 간단한 코드를 사용해 테스트 사용자의 가입 날짜를 1년 전 오늘로 설정합니다 [1]
/cakeday/anniversaries/today에 접근합니다- Error 500 발생
Message (4 copies reported)
ActiveModel::MissingAttributeError (missing attribute: admin)
app/models/concerns/roleable.rb:14:in `staff?'
lib/plugin/instance.rb:297:in `public_send'
lib/plugin/instance.rb:297:in `block (2 levels) in add_to_class'
(eval):8:in `_fast_attributes'
app/controllers/application_controller.rb:521:in `serialize_data'
app/controllers/application_controller.rb:414:in `block in with_resolved_locale'
app/controllers/application_controller.rb:414:in `with_resolved_locale'
lib/middleware/omniauth_bypass_middleware.rb:74:in `call'
lib/content_security_policy/middleware.rb:12:in `call'
lib/middleware/anonymous_cache.rb:366:in `call'
config/initializers/100-quiet_logger.rb:20:in `call'
config/initializers/100-silence_logger.rb:29:in `call'
lib/middleware/enforce_hostname.rb:24:in `call'
lib/middleware/request_tracker.rb:228:in `call'
Backtrace
activemodel (7.0.3.1) lib/active_model/attribute.rb:226:in `value'
activemodel (7.0.3.1) lib/active_model/attribute_set/builder.rb:43:in `fetch_value'
activerecord (7.0.3.1) lib/active_record/attribute_methods/read.rb:38:in `_read_attribute'
activemodel (7.0.3.1) lib/active_model/attribute_methods.rb:277:in `admin'
app/models/concerns/roleable.rb:14:in `staff?'
plugins/discourse-animated-avatars/plugin.rb:90:in `block (2 levels) in activate!'
lib/plugin/instance.rb:297:in `public_send'
lib/plugin/instance.rb:297:in `block (2 levels) in add_to_class'
activesupport (7.0.3.1) lib/active_support/core_ext/object/try.rb:15:in `public_send'
activesupport (7.0.3.1) lib/active_support/core_ext/object/try.rb:15:in `try'
rails 콘솔에서 설정하는 것보다 더 쉬운 방법으로 생일(birthdays)에 대해 같은 작업을 시도해 보았지만, /cakeday/birthdays/today은 정상적으로 작동하는 것 같았습니다.
user = User.where(username: ‘Test_Three’)
user.update(created_at: “2022-01-11 00:00:00.00000”) ↩︎