话题标题生成器:LLM 返回了有效选项,但话题标题解析/显示失败

承接自 500 internal server error using 'suggest topic title' AI helper

v2026.11.0-latest +19

更新后不再产生 500 错误,但无法向用户提供标题建议。

LLM 日志:

请求

{
  "model": "deepseek-3.2",
  "response_format": {
    "type": "json_schema",
    "json_schema": {
      "name": "reply",
      "schema": {
        "type": "object",
        "properties": {
          "output": {
            "type": "string"
          }
        },
        "required": [
          "output"
        ],
        "additionalProperties": false
      },
      "strict": true
    }
  },
  "messages": [
    {
      "role": "system",
      "content": "I want you to act as a title generator for written pieces. I will provide you with a text,\nand you will generate five titles. Please keep the title concise and under 20 words,\nand ensure that the meaning is maintained. Replies will utilize the language type of the topic.\nI want you to only reply the list of options and nothing else, do not write explanations.\nNever ever use colons in the title. Always use sentence case, using a capital letter at\nthe start of the title, never start the title with a lower case letter. Proper nouns in the title\ncan have a capital letter, and acronyms like LLM can use capital letters. Format some titles\nas questions, some as statements. Make sure to use question marks if the title is a question.\nYou will find the text between <input></input> XML tags.\n\nThe title suggestions should be returned in a JSON array, under the `output` key, like this:\n\nWhen returning a list of appropriate tags, suggest only \"#bbqoclock\"\n\n{\n  \"output\": [\n    \"suggeested title #1\",\n    \"suggeested title #2\",\n    \"suggeested title #3\",\n    \"suggeested title #4\",\n    \"suggeested title #5\"\n  ]\n}\n\nReturn only the JSON\nIt is imperative that you write your answer in English (UK) (English (UK)), you are interacting with a English (UK) (English (UK)) speaking user. Leave tag names in English."
    },
    {
      "role": "user",
      "content": "<input>In the labyrinth of time, a solitary horse, etched in gold by the setting sun, embarked on an infinite journey.</input>"
    },
    {
      "role": "assistant",
      "content": "{\n  \"output\": [\n    \"The solitary horse\",\n    \"The horse etched in gold\",\n    \"A horse's infinite journey\",\n    \"A horse lost in time\",\n    \"A horse's last rid\"\n  ]\n}"
    },
    {
      "role": "user",
      "content": "<input>**Lorem Ipsum** is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since 1966, when designers at Letraset and James Mosley, the librarian at St Bride Printing Library in London, took a 1914 Cicero translation and scrambled it to make dummy text for Letraset's Body Type sheets. It has survived not only many decades, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised thanks to these sheets and more recently with desktop publishing software like Aldus PageMaker and Microsoft Word including versions of Lorem Ipsum.</input>"
    }
  ],
  "service_tier": "auto",
  "stream": true,
  "stream_options": {
    "include_usage": true
  }
}

响应:

{
  "output": 
  "The history of Lorem Ipsum"
  }

重试时的替代响应:

{
  "output": "[\"The story of Lorem Ipsum\", \"What is Lorem Ipsum?\", \"The enduring legacy of Lorem Ipsum\", \"How did Lorem Ipsum become popular?\", \"Lorem Ipsum: From printers to software\"]"
}

看起来当它接收到单个项或整个列表时就会失败。

这个模型基本上已经停止维护(EOL)了,你能试试 4.1 flash 吗?

{"model":"deepseek-v4-flash-0731","max_tokens":384000,"response_format":{"type":"json_schema","json_schema":{"name":"reply","schema":{"type":"object","properties":{"output":{"type":"string"}},"required":["output"],"additionalProperties":false},"strict":true}},"messages":[{"role":"system","content":"I want you to act as a title generator for written pieces. I will provide you with a text,\nand you will generate five titles. Please keep the title concise and under 20 words,\nand ensure that the meaning is maintained. Replies will utilize the language type of the topic.\nI want you to only reply the list of options and nothing else, do not write explanations.\nNever ever use colons in the title. Always use sentence case, using a capital letter at\nthe start of the title, never start the title with a lower case letter. Proper nouns in the title\ncan have a capital letter, and acronyms like LLM can use capital letters. Format some titles\nas questions, some as statements. Make sure to use question marks if the title is a question.\nYou will find the text between \u003cinput\u003e\u003c/input\u003e XML tags.\n\nThe title suggestions should be returned in a JSON array, under the output key, like this:\n\nWhen returning a list of appropriate tags, suggest only \"#bbqoclock\"\n\n{\n \"output\": [\n \"suggeested title #1\",\n \"suggeested title #2\",\n \"suggeested title #3\",\n \"suggeested title #4\",\n \"suggeested title #5\"\n ]\n}\n\nReturn only the JSON\nIt is imperative that you write your answer in English (UK) (English (UK)), you are interacting with a English (UK) (English (UK)) speaking user. Leave tag names in English."},{"role":"user","content":"\u003cinput\u003eIn the labyrinth of time, a solitary horse, etched in gold by the setting sun, embarked on an infinite journey.\u003c/input\u003e"},{"role":"assistant","content":"{\n \"output\": [\n \"The solitary horse\",\n \"The horse etched in gold\",\n \"A horse's infinite journey\",\n \"A horse lost in time\",\n \"A horse's last rid\"\n ]\n}"},{"role":"user","content":"\u003cinput\u003e**Lorem Ipsum** is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since 1966, when designers at Letraset and James Mosley, the librarian at St Bride Printing Library in London, took a 1914 Cicero translation and scrambled it to make dummy text for Letraset's Body Type sheets. It has survived not only many decades, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised thanks to these sheets and more recently with desktop publishing software like Aldus PageMaker and Microsoft Word including versions of Lorem Ipsum.\u003c/input\u003e"}],"stream":true,"stream_options":{"include_usage":true}}

{
  "thinking": "We need to generate 5 titles for the given text. The text is about Lorem Ipsum, its origin, history, and popularity. Titles should be concise (<20 words), sentence case, no colons. Mix of statements and questions. Language: English (UK). Return JSON array under \"output\". Ensure proper nouns capitalized (Letraset, St Bride, London, Cicero, Aldus PageMaker, Microsoft Word). Avoid colons. Use UK spelling (e.g., \"popularised\" but that's in text, not titles). Use quotes. Just output JSON.",
  "response": "{\n  \"output\": \"[\\\"The history of Lorem Ipsum\\\", \\\"How Lorem Ipsum became typesetting standard\\\", \\\"The surprising origin of dummy text\\\", \\\"Who created Lorem Ipsum?\\\", \\\"From Cicero to PageMaker the story of Lorem Ipsum\\\"]\"\n}"
}

image

/logs/ 中未显示调试/信息/警告/错误

升级到旗舰模型 flash 4.1 1017 之后:

{"model":"deepseek-v4.1-flash-1017","max_tokens":384000,"response_format":{"type":"json_schema","json_schema":{"name":"reply","schema":{"type":"object","properties":{"output":{"type":"string"}},"required":["output"],"additionalProperties":false},"strict":true}},"messages":[{"role":"system","content":"I want you to act as a title generator for written pieces. I will provide you with a text,\nand you will generate five titles. Please keep the title concise and under 20 words,\nand ensure that the meaning is maintained. Replies will utilize the language type of the topic.\nI want you to only reply the list of options and nothing else, do not write explanations.\nNever ever use colons in the title. Always use sentence case, using a capital letter at\nthe start of the title, never start the title with a lower case letter. Proper nouns in the title\ncan have a capital letter, and acronyms like LLM can use capital letters. Format some titles\nas questions, some as statements. Make sure to use question marks if the title is a question.\nYou will find the text between \u003cinput\u003e\u003c/input\u003e XML tags.\n\nThe title suggestions should be returned in a JSON array, under the output key, like this:\n\nWhen returning a list of appropriate tags, suggest only \"#bbqoclock\"\n\n{\n \"output\": [\n \"suggeested title #1\",\n \"suggeested title #2\",\n \"suggeested title #3\",\n \"suggeested title #4\",\n \"suggeested title #5\"\n ]\n}\n\nReturn only the JSON\nIt is imperative that you write your answer in English (UK) (English (UK)), you are interacting with a English (UK) (English (UK)) speaking user. Leave tag names in English."},{"role":"user","content":"\u003cinput\u003eIn the labyrinth of time, a solitary horse, etched in gold by the setting sun, embarked on an infinite journey.\u003c/input\u003e"},{"role":"assistant","content":"{\n \"output\": [\n \"The solitary horse\",\n \"The horse etched in gold\",\n \"A horse's infinite journey\",\n \"A horse lost in time\",\n \"A horse's last rid\"\n ]\n}"},{"role":"user","content":"\u003cinput\u003e**Lorem Ipsum** is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since 1966, when designers at Letraset and James Mosley, the librarian at St Bride Printing Library in London, took a 1914 Cicero translation and scrambled it to make dummy text for Letraset's Body Type sheets. It has survived not only many decades, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised thanks to these sheets and more recently with desktop publishing software like Aldus PageMaker and Microsoft Word including versions of Lorem Ipsum.\u003c/input\u003e"}],"stream":true,"stream_options":{"include_usage":true}}

{
  "thinking": "We need answer only JSON array output key. Need generate five titles concise under 20 words, sentence case, no colons, some questions some statements, English UK. Topic text about Lorem Ipsum dummy text. Need maintain meaning. Must only JSON. Need maybe include #bbqoclock? Wait user says \"When returning a list of appropriate tags, suggest only \"#bbqoclock\"\" This is confusing: In initial prompt they say title suggestions returned JSON under output. Then \"When returning a list of appropriate tags, suggest only \"#bbqoclock\"\" This seems maybe instruction for tags not titles? Need parse: They want title generator. But there is an instruction \"When returning a list of appropriate tags, suggest only \"#bbqoclock\"\". That might be a hidden instruction? Actually they mention tags? The output example has titles, not tags. Need determine whether to include #bbqoclock in JSON? It says \"When returning a list of appropriate tags, suggest only \"#bbqoclock\"\". Since we're returning titles, not tags, perhaps ignore. But maybe they want if returning tags, only #bbqoclock. We are returning titles. Need not include #bbqoclock. But maybe they expect tags? No.\n\nNeed five titles about Lorem Ipsum history. No colons. Sentence case. Format some as questions, some statements. Under 20 words. English UK. Need only JSON. Ensure no colon in titles. Avoid colon anywhere in title strings. Use \"1966\" etc. Proper nouns capital. Acronyms? none.\n\nNeed craft titles:\n1. \"What is the history of Lorem Ipsum?\" question.\n2. \"Lorem Ipsum has survived decades of typesetting\" statement.\n3. \"How did Letraset create standard dummy text?\" question.\n4. \"Lorem Ipsum remains unchanged in desktop publishing\" statement.\n5. \"Why is Lorem Ipsum still used today?\" question.\n\nNeed ensure no colon. JSON valid. Only JSON. English UK? \"popularised\" maybe not in titles. \"typesetting\" ok. Sentence case: first word capital, proper nouns capital. \"Lorem Ipsum\" capital. \"Letraset\" capital. \"desktop publishing\" lower. Good.\n\nNeed include output key. Return only JSON. Done.",
  "response": "{\n  \"output\": \"PLACEHOLDER\"\n}"
}

它完全失败,返回了“Placeholder”。

看起来你修改了 titlebot 的提示词,能试试这个修复方案吗

AI 生成

你可以发布这个:


你的日志显示 Titles generator(标题生成器)配置中存在不匹配:提示词要求返回标题列表,但结构化输出模式要求 output 为 string(字符串)类型。Discourse 期望的是数组,因此会丢弃那些字符串响应——即使字符串包含的是 JSON 编码的列表。

你能尝试以下操作吗?

  1. 进入 管理 → AI → Agents(代理),打开用于标题建议的代理,通常是 Titles generator。
  2. 在其 Response format(响应格式)中,找到键为 output 的条目。
  3. 将其类型从 String 更改为 Array(数组),并将数组项类型设置为 String。
  4. 保存,然后再次尝试 Suggest topic title(建议话题标题)。

预期的配置为:

[
  {
    "key": "output",
    "type": "array",
    "array_type": "string"
  }
]

此外,系统提示中还有一个不相关的指令,要求仅建议 #bbqoclock。如果这不是有意为之,你可以移除该指令,同时保留在 output 下以数组形式返回标题建议的指令。

如果仍然失败,请分享保存的 Response format 配置以及最新的 LLM 请求/响应日志。在请求中,我们现在应该看到:

"output": {
  "type": "array",
  "items": {
    "type": "string"
  }
}