AI翻訳の誤り

RBoy · 2026 年 5 月 8 日午後 1:01

ログに多数のこのようなエラーが記録されていました：

メッセージ（2 件のコピーが報告されました）

DiscourseAi::Translation: 投稿 120 の da への翻訳に失敗しました：バリデーションエラー - Raw は空にできません、Cooked も空にできません

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バックトレース

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Falco · 2026 年 5 月 8 日午後 1:08

次に、投稿 120 の内容を確認してください（/p/120 に移動するだけで確認できます）。その後、その投稿を翻訳しようとした際の LLM の応答を確認してください（ai_api_audit_logs テーブルを確認します）。

RBoy · 2026 年 5 月 8 日午後 1:17

このクエリで監査ログを確認すると

SELECT 
  feature_name,
  created_at,
  post_id,
  response_tokens
FROM 
  ai_api_audit_logs
WHERE 
  post_id IS NOT NULL
  AND created_at > :start_date
  AND (response_tokens IS NULL OR response_tokens != 1)
ORDER BY 
  created_at DESC

ログに表示されている日時付近のその投稿に関する結果は何も返ってきません。
他に確認すべきことはありますか？

Falco · 2026 年 5 月 8 日午後 1:19

はい、WHERE から response_tokens 節全体を削除してください。

RBoy · 2026 年 5 月 8 日午後 5:03

はい、まず先にタイプミスがありました。PM ではなく、/p/120 を使うべきでした。/t/120 を使っていました。

/p/120 は https://discussion.mcebuddy2x.com/t/63/1 を指します。

その後、テーブルに対して更新されたクエリを実行しましたが、ログのタイムスタンプ（木曜午後 11:25）に一致するエントリは見つかりませんでした。

タイムスタンプに最も近い以下のエントリのみがテーブルに存在します。

feature_name	created_at	post	response_tokens
translation	2026-05-07T23:26:15.471Z	`https://discussion.mcebuddy2x.com/t/5897/1`	2423
translation	2026-05-07T23:11:23.504Z	`https://discussion.mcebuddy2x.com/t/5896/2`	425

上記のどの投稿 ID も、エラーログにある投稿 ID と一致しません。

その投稿 ID への参照がログに現れるのは、ずっと後の時間です。

feature_name	created_at	post	response_tokens
translation	2026-05-08T03:10:18.214Z	`https://discussion.mcebuddy2x.com/t/63/1`	0

Falco · 2026 年 5 月 8 日午後 5:35

レスポンストークンはデバッグには役に立ちません。生レスポンスを表示する必要があります。

RBoy · 2026 年 5 月 8 日午後 7:25

要するに、ログと同じタイムスタンプと投稿IDを持つレスポンスが一切見当たりません。

その投稿IDに関する次のデータダンプは約1時間後に現れ、以下のような内容が含まれています：

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" given","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":".\n\n","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":"Probably","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" keep","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" truncated","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":".\n\n","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":"Now","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" produce","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" final","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" JSON","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" with","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" \"","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":"output","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":"\":","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" translation","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" string","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":".\n\n","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":"Make","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" sure","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" to","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" preserve","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" line","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" breaks","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" exactly","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" as","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" original","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":".\n\n","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

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data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" final","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":" translation","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

data: {"id":"chatcmpl-35a85986-7a6b-4169-893a-b43bcc22b1f2","object":"chat.completion.chunk","created":1778209824,"model":"openai/gpt-oss-120b","system_fingerprint":"fp_d66938db44","choices":[{"index":0,"delta":{"reasoning":".\n\n","channel":"analysis"},"logprobs":null,"finish_reason":null}]}

event: error
data: {"error":{"message":"Failed to generate JSON. Please adjust your prompt. See 'failed_generation' for more details.","type":"invalid_request_error","code":"json_validate_failed","failed_generation":"max completion tokens reached before generating a valid document","status_code":400}}

Falco · 2026 年 5 月 8 日午後 7:53

推論トークンが max_tokens 完了制限のすべてのトークンを消費してしまっています。これが翻訳に推論機能を使用しないもう一つの理由です。

これに対処するためのサイト設定がありましたが、

その後、以下のプルリクエストで削除されました。

github.com/discourse/discourse

DEV: Update prompts for translations (#38965)

main ← prompt-updates

merged 03:30PM - 30 Mar 26 UTC

nattsw

+36 -80

This PR updates the system prompts for the post and topic title translators to p…roduce more natural, idiomatic output. The previous prompts optimised for accuracy, which led to translations that were technically correct but read like machine translation being overly literal, sometimes the wrong register, and occasionally picking the wrong sense of an ambiguous word.

トピック		返信	表示
Discourse AI Failing to translate large number of posts and topics Support content-localization , ai	8	231	2025 年 11 月 10 日
AI Translation skips Portuguese (pt) locale - post translated to all languages except Portuguese Bug ai , dynaloc	25	206	2026 年 4 月 22 日
Error when translate post by ai （Job exception: undefined method `strip' for an instance of DiscourseAi::Completions::StructuredOutput Support ai , dynaloc	6	147	2025 年 12 月 8 日
AI translation backfill not working after all settings configured Support ai , content-localization	35	639	2025 年 11 月 17 日
The usage problem after using AI translation Support dynaloc , ai	7	177	2025 年 7 月 15 日

AI翻訳の誤り

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