最近のアップデート後、以下のエラーが発生します。また、一部のユーザーがホワイトリストに登録されたファイルを更新できないと報告しています。
Aws::S3::Errors::NotImplemented (A header you provided implies functionality that is not implemented)
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-core-3.48.6/lib/seahorse/client/plugins/raise_response_errors.rb:15:in `call'
Amazon S3 の S3 バケットをお使いですか？
いいえ、私は独自の MinIO サーバーを使用しています。
エラーの内容は比較的明白です。Discourse は MinIO が実装していない S3 の機能を使用しています。
はい。でも、それは何ですか？また、無効化または修正するにはどうすればよいですか？
S3 に関連する最近のコミットを確認するのが最も確実です。
私の理解では、私が持っていない最新の変更点は、私のフォーラムで無効になっている「セキュアアップロード機能」です。 
ご提案はありますか？この問題の報告がさらに増えています。
画像をアップロードすると、内部サーバーエラーが発生して投稿を公開できません。ただし、アップロードした画像の URL を取得し、投稿を公開してから、投稿を編集してその URL を追加し、再度公開することは可能です。
エラーの完全なバックトレースを教えてください。
こちらです：
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-core-3.48.6/lib/seahorse/client/plugins/raise_response_errors.rb:15:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-s3-1.36.1/lib/aws-sdk-s3/plugins/sse_cpk.rb:22:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-s3-1.36.1/lib/aws-sdk-s3/plugins/dualstack.rb:26:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-s3-1.36.1/lib/aws-sdk-s3/plugins/accelerate.rb:35:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-core-3.48.6/lib/aws-sdk-core/plugins/jsonvalue_converter.rb:20:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-core-3.48.6/lib/aws-sdk-core/plugins/idempotency_token.rb:17:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-core-3.48.6/lib/aws-sdk-core/plugins/param_converter.rb:24:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-core-3.48.6/lib/aws-sdk-core/plugins/response_paging.rb:10:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-core-3.48.6/lib/seahorse/client/plugins/response_target.rb:23:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-core-3.48.6/lib/seahorse/client/request.rb:70:in `send_request'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-s3-1.36.1/lib/aws-sdk-s3/client.rb:6018:in `put_object_acl'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/aws-sdk-s3-1.36.1/lib/aws-sdk-s3/object_acl.rb:257:in `put'
/var/www/discourse/lib/file_store/s3_store.rb:201:in `update_ACL'
/var/www/discourse/lib/file_store/s3_store.rb:163:in `update_upload_ACL'
/var/www/discourse/app/models/upload.rb:238:in `update_secure_status'
/var/www/discourse/app/models/post.rb:919:in `block in update_uploads_secure_status'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/relation/delegation.rb:85:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/relation/delegation.rb:85:in `each'
/var/www/discourse/app/models/post.rb:919:in `update_uploads_secure_status'
/var/www/discourse/lib/post_creator.rb:378:in `update_uploads_secure_status'
/var/www/discourse/lib/post_creator.rb:180:in `block in create'
/var/www/discourse/lib/post_creator.rb:347:in `block in transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/database_statements.rb:281:in `block in transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/transaction.rb:280:in `block in within_new_transaction'
/usr/local/lib/ruby/2.6.0/monitor.rb:235:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/transaction.rb:278:in `within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/database_statements.rb:281:in `transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/transactions.rb:212:in `transaction'
/var/www/discourse/lib/post_creator.rb:346:in `transaction'
/var/www/discourse/lib/post_creator.rb:167:in `create'
/var/www/discourse/lib/new_post_manager.rb:265:in `perform_create_post'
/var/www/discourse/lib/new_post_manager.rb:200:in `perform'
/var/www/discourse/app/controllers/posts_controller.rb:172:in `block in create'
/var/www/discourse/lib/distributed_memoizer.rb:30:in `memoize'
/var/www/discourse/app/controllers/posts_controller.rb:171:in `create'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/abstract_controller/base.rb:196:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_controller/metal/rendering.rb:30:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/abstract_controller/callbacks.rb:42:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/callbacks.rb:135:in `run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/abstract_controller/callbacks.rb:41:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_controller/metal/rescue.rb:22:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_controller/metal/instrumentation.rb:33:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/notifications.rb:180:in `block in instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/notifications/instrumenter.rb:24:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/notifications.rb:180:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_controller/metal/instrumentation.rb:32:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/railties/controller_runtime.rb:27:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/abstract_controller/base.rb:136:in `process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionview-6.0.1/lib/action_view/rendering.rb:39:in `process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.1.3/lib/mini_profiler/profiling_methods.rb:78:in `block in profile_method'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_controller/metal.rb:191:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_controller/metal.rb:252:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/routing/route_set.rb:51:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/routing/route_set.rb:33:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/journey/router.rb:49:in `block in serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/journey/router.rb:32:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/journey/router.rb:32:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/routing/route_set.rb:837:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-protection-2.0.7/lib/rack/protection/frame_options.rb:31:in `call'
/var/www/discourse/lib/middleware/omniauth_bypass_middleware.rb:68:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/tempfile_reaper.rb:15:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/conditional_get.rb:38:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/head.rb:12:in `call'
/var/www/discourse/lib/content_security_policy/middleware.rb:12:in `call'
/var/www/discourse/lib/middleware/anonymous_cache.rb:274:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/session/abstract/id.rb:232:in `context'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/session/abstract/id.rb:226:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/middleware/cookies.rb:648:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/middleware/callbacks.rb:27:in `block in call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/callbacks.rb:101:in `run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/middleware/callbacks.rb:26:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/middleware/actionable_exceptions.rb:17:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/middleware/debug_exceptions.rb:32:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/logster-2.4.1/lib/logster/middleware/reporter.rb:43:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.1/lib/rails/rack/logger.rb:38:in `call_app'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.1/lib/rails/rack/logger.rb:28:in `call'
/var/www/discourse/config/initializers/100-quiet_logger.rb:18:in `call'
/var/www/discourse/config/initializers/100-silence_logger.rb:31:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/middleware/remote_ip.rb:81:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/middleware/request_id.rb:27:in `call'
/var/www/discourse/lib/middleware/enforce_hostname.rb:17:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/method_override.rb:22:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/middleware/executor.rb:14:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/sendfile.rb:111:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.1/lib/action_dispatch/middleware/host_authorization.rb:77:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.1.3/lib/mini_profiler/profiler.rb:184:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/message_bus-2.2.3/lib/message_bus/rack/middleware.rb:57:in `call'
/var/www/discourse/lib/middleware/request_tracker.rb:176:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.1/lib/rails/engine.rb:526:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.1/lib/rails/railtie.rb:190:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.1/lib/rails/railtie.rb:190:in `method_missing'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/urlmap.rb:68:in `block in call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/urlmap.rb:53:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/urlmap.rb:53:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.5.1/lib/unicorn/http_server.rb:605:in `process_client'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.5.1/lib/unicorn/http_server.rb:700:in `worker_loop'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.5.1/lib/unicorn/http_server.rb:548:in `spawn_missing_workers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.5.1/lib/unicorn/http_server.rb:144:in `start'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.5.1/bin/unicorn:128:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/bin/unicorn:23:in `load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/bin/unicorn:23:in `<main>'
「secure media」設定を有効にしましたか？
設定が無効になっている場合でも、すべての ACL 処理を実行する必要がありますか？それでは、現在存在するすべての S3 クローンとの互換性が損なわれます。
でサイト設定を確認することで、それをスキップすることはできますか？
その通りです。アップロードをセキュアとしてマークする必要がある場合のみ ACL を更新するのが妥当だと考えます。これで修正されるはずです：FIX: Only trigger upload ACL update when needed · discourse/discourse@5c5d8a3 · GitHub
ただし、@hosna さんへの注意点として、この修正は新規投稿を作成する際のアップロードにのみ適用されます。アップロードの ACL 更新をトリガーする他の操作（例えばトピックの変換など）は、Minio を使用している場合、おそらくまだ動作しないでしょう。
それらは近々修正されるのでしょうか？それとも、Discourse のバージョンを元に戻すべきでしょうか？
Minio は公式にはサポートされていません。この問題がすぐに解決されるかどうかはわかりません。
PR の提出は歓迎します。AWS SDK が ACL の更新時に Aws::S3::Errors::NotImplemented エラーが発生した場合、失敗しないログ警告を出力するのが最善の策だと思います。関連する行は次の通りです：discourse/lib/file_store/s3_store.rb at main · discourse/discourse · GitHub
501 レスポンスコードを修正すべきか、そのままにすべきか、どなたか教えてください。サーバーに問題が起きていないように見えるからです。
Minio は現在サポートされていますか、@Falco さん？
動作します。また、アップロード用のオブジェクトストレージの利用 (S3 およびクローン) に関するガイドも用意されています。
