我已将此错误缩小范围。仅当类别包含子类别时才会发生。/categories 也会导致 500 错误。
而且我仍然不确定这是否来自 Calender。如果是，这是安全模式无效的另一个案例吗？
但 Lockdown 会给出这个：
消息
HasCustomFields::NotPreloadedError (尝试访问“Category”类上未预加载的自定义字段“redirect_url”。为防止 N+1 查询，此操作被禁止。)
app/models/concerns/has_custom_fields.rb:203:in `[]'
(eval):49:in `_fast_attributes'
lib/freedom_patches/ams_include_without_root.rb:57:in `include!'
lib/freedom_patches/ams_include_without_root.rb:57:in `include!'
app/controllers/application_controller.rb:531:in `serialize_data'
app/controllers/application_controller.rb:540:in `render_serialized'
app/controllers/categories_controller.rb:408:in `categories_and_topics'
app/controllers/categories_controller.rb:99:in `categories_and_latest'
app/controllers/application_controller.rb:422:in `block in with_resolved_locale'
app/controllers/application_controller.rb:422:in `with_resolved_locale'
lib/middleware/omniauth_bypass_middleware.rb:64:in `call'
lib/middleware/content_security_policy/middleware.rb:12:in `call'
lib/middleware/anonymous_cache.rb:389:in `call'
lib/middleware/gtm_script_nonce_injector.rb:10: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:233:in `call'
回溯
app/models/concerns/has_custom_fields.rb:203:in `[]'
plugins/discourse-category-lockdown/plugin.rb:18:in `block (2 levels) in activate!'
(eval):49:in `_fast_attributes'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:468:in `rescue in attributes'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:455:in `attributes'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:480:in `_serializable_hash'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:359:in `serializable_hash'
active_model_serializers (0.8.4) lib/active_model/serializer/associations.rb:124:in `block in serialize'
active_model_serializers (0.8.4) lib/active_model/serializer/associations.rb:123:in `map'
active_model_serializers (0.8.4) lib/active_model/serializer/associations.rb:123:in `serialize'
环境
HTTP HOSTS: foorumi.katiska.eu
所以我很确定这并非来自插件，而是来自 Discourse 本身，但同样，我不是开发人员。