[Bug]频繁报错 LLM 响应错误: All chat models failed: TypeError: object of type 'NoneType' has no len()

[bighamx]

What happened / 发生了什么

在使用QQ机器人和agent交流时，时长收到以下信息：
LLM 响应错误: All chat models failed: TypeError: object of type 'NoneType' has no len()
此时查看系统日志，有以下信息：
[2026-03-14 17:36:32.437] [Core] [WARN] [v4.20.0] [runners.tool_loop_agent_runner:268]: Chat Model openrouter/openrouter/hunter-alpha request error: object of type 'NoneType' has no len()
Traceback (most recent call last):
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\agent\runners\tool_loop_agent_runner.py", line 243, in _iter_llm_responses_with_fallback
async for resp in self._iter_llm_responses(include_model=idx == 0):
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\agent\runners\tool_loop_agent_runner.py", line 220, in _iter_llm_responses
yield await self.provider.text_chat(**payload)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 763, in text_chat
) = await self._handle_api_error(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 714, in _handle_api_error
raise e
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 751, in text_chat
llm_response = await self._query(payloads, func_tool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 264, in _query
llm_response = await self._parse_openai_completion(completion, tools)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 471, in _parse_openai_completion
if len(completion.choices) == 0:
^^^^^^^^^^^^^^^^^^^^^^^
TypeError: object of type 'NoneType' has no len()

Reproduce / 如何复现？

正常和agent聊天

AstrBot version, deployment method (e.g., Windows Docker Desktop deployment), provider used, and messaging platform used. / AstrBot 版本、部署方式（如 Windows Docker Desktop 部署）、使用的提供商、使用的消息平台适配器

使用launcher部署
4.20.0
Openrouter
QQ机器人

OS

Windows

Logs / 报错日志

[2026-03-14 17:30:39.851] [Core] [INFO] [runners.tool_loop_agent_runner:657]: Agent 使用工具: ['astrbot_execute_shell']
[2026-03-14 17:30:39.851] [Core] [INFO] [runners.tool_loop_agent_runner:703]: 使用工具：astrbot_execute_shell，参数：{'command': 'type C:\Users\chuckie\.openclaw\workspace\skills\everything-search\search.py | findstr /n "." | head -50'}
[2026-03-14 17:30:39.943] [Core] [INFO] [runners.tool_loop_agent_runner:881]: Tool astrbot_execute_shell Result: {"stdout": "", "stderr": "'head' \u4e0d\u662f\u5185\u90e8\u6216\u5916\u90e8\u547d\u4ee4\uff0c\u4e5f\u4e0d\u662f\u53ef\u8fd0\u884c\u7684\u7a0b\u5e8f\r\n\u6216\u6279\u5904\u7406\u6587\u4ef6\u3002\r\n", "exit_code": 255}
[2026-03-14 17:32:45.479] [Core] [WARN] [v4.20.0] [runners.tool_loop_agent_runner:268]: Chat Model openrouter/openrouter/hunter-alpha request error: object of type 'NoneType' has no len()
Traceback (most recent call last):
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\agent\runners\tool_loop_agent_runner.py", line 243, in _iter_llm_responses_with_fallback
async for resp in self._iter_llm_responses(include_model=idx == 0):
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\agent\runners\tool_loop_agent_runner.py", line 220, in _iter_llm_responses
yield await self.provider.text_chat(**payload)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 763, in text_chat
) = await self._handle_api_error(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 714, in _handle_api_error
raise e
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 751, in text_chat
llm_response = await self._query(payloads, func_tool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 264, in _query
llm_response = await self._parse_openai_completion(completion, tools)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 471, in _parse_openai_completion
if len(completion.choices) == 0:
^^^^^^^^^^^^^^^^^^^^^^^
TypeError: object of type 'NoneType' has no len()
[2026-03-14 17:32:45.492] [Core] [INFO] [respond.stage:184]: Prepare to send - /D425866BDDB69A1305199BAE0B166AFB: LLM 响应错误: All chat models failed: TypeError: object of type 'NoneType' has no len()
[2026-03-14 17:32:56.774] [Core] [INFO] [core.event_bus:66]: [default] [default(qq_official)] D425866BDDB69A1305199BAE0B166AFB: [At:qq_official] 打开书房灯
[2026-03-14 17:33:03.172] [Core] [INFO] [runners.tool_loop_agent_runner:657]: Agent 使用工具: ['web_search']
[2026-03-14 17:33:03.173] [Core] [INFO] [runners.tool_loop_agent_runner:703]: 使用工具：web_search，参数：{'query': '打开书房灯 智能家居 控制命令', 'max_results': 3}
[2026-03-14 17:33:03.173] [Core] [INFO] [web_searcher.main:213]: web_searcher - search_from_search_engine: 打开书房灯 智能家居 控制命令
[2026-03-14 17:33:04.961] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: Gmail - Email from Google - https://mail.google.com › mail
[2026-03-14 17:33:05.037] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: Sign in - Google Accounts - https://accounts.google.com › Login
[2026-03-14 17:33:05.038] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: Gmail - Email by Google - App Store - https://apps.apple.com › us › app › gmail-email-by-google
[2026-03-14 17:33:05.042] [Core] [INFO] [runners.tool_loop_agent_runner:881]: Tool web_search Result: 1. Gmail - Email from Google

2. Sign in - Google Accounts

3. Gmail - Email by Google - App Store

[2026-03-14 17:33:19.660] [Core] [INFO] [respond.stage:184]: Prepare to send - /D425866BDDB69A1305199BAE0B166AFB: 抱歉，我无法直接控制你的智能家居设备 😅

我目前是一个文本助手，没有连接到你的智能家居系统（如小米、华为、天猫精灵等平台）。

不过我可以帮你：

💡 如何控制书房灯？

1. 使用对应的智能家居App：小米米家、华为智慧生活、天猫精灵等
2. 语音助手：小爱同学、小度、天猫精灵等
3. 智能开关：如果你有智能开关，可以通过App控制

🔧 需要我帮你什么？

• 搜索你使用的智能家居品牌如何设置语音控制？
• 提供连接智能灯的步骤指导？
• 帮助编写自动化脚本（如果你有智能家居开发板）？

请告诉我你使用的是哪个品牌的智能家居设备，我可以提供更具体的帮助！
[2026-03-14 17:34:04.355] [Core] [INFO] [core.event_bus:66]: [default] [default(qq_official)] D425866BDDB69A1305199BAE0B166AFB: [At:qq_official] 你已经有这个skill
[2026-03-14 17:34:12.637] [Core] [INFO] [runners.tool_loop_agent_runner:657]: Agent 使用工具: ['web_search']
[2026-03-14 17:34:12.637] [Core] [INFO] [runners.tool_loop_agent_runner:703]: 使用工具：web_search，参数：{'query': 'openclaw 控制灯 skill', 'max_results': 5}
[2026-03-14 17:34:12.638] [Core] [INFO] [web_searcher.main:213]: web_searcher - search_from_search_engine: openclaw 控制灯 skill
[2026-03-14 17:34:14.784] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: OpenClaw - OpenClaw - https://docs.openclaw.ai › zh-CN
[2026-03-14 17:34:14.784] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: OpenClaw 中文文档 | 个人 AI 助手 · 任意平台 · 龙虾之道 - https://openclaw.cc
[2026-03-14 17:34:14.785] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: OpenClaw | 能干活的 AI 助手 - https://openclaws.io › zh
[2026-03-14 17:34:14.785] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: OpenClaw 从安装到入门的完全指南（2026-02-04） - 知乎 - https://zhuanlan.zhihu.com
[2026-03-14 17:34:14.785] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: OpenClaw是什么？OpenClaw能做什么？OpenClaw详细介绍 ... - https://cloud.tencent.com › developer › article
[2026-03-14 17:34:16.199] [Core] [INFO] [runners.tool_loop_agent_runner:881]: Tool web_search Result: 1. OpenClaw - OpenClaw

2. OpenClaw 中文文档 | 个人 AI 助手 · 任意平台 · 龙虾之道

企业服务GoClaw - 岗位型 AI 员工平台7×24 小时在岗，多渠道接入，输出稳定可复核的业务结果。

3. OpenClaw | 能干活的 AI 助手

4. OpenClaw 从安装到入门的完全指南（2026-02-04） - 知乎

BioEngXBioEngX-专业生物技术社区, 地址 www.bioengx.com。本专栏欢迎投稿。

5. OpenClaw是什么？OpenClaw能做什么？OpenClaw详细介绍 ...

[2026-03-14 17:34:24.914] [Core] [INFO] [runners.tool_loop_agent_runner:657]: Agent 使用工具: ['web_search']
[2026-03-14 17:34:24.915] [Core] [INFO] [runners.tool_loop_agent_runner:703]: 使用工具：web_search，参数：{'query': 'home assistant 控制灯 API', 'max_results': 5}
[2026-03-14 17:34:24.915] [Core] [INFO] [web_searcher.main:213]: web_searcher - search_from_search_engine: home assistant 控制灯 API
[2026-03-14 17:34:26.914] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: .shop后缀的域名前景如何？ - 知乎 - https://www.zhihu.com › question
[2026-03-14 17:34:26.915] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: shopify 独立站 .com 域名与 .shop 域名区别和影响大吗？ - 知乎 - https://www.zhihu.com › question
[2026-03-14 17:34:26.915] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: shop和store英语都是商店，两者有什么区别_百度知道 - https://zhidao.baidu.com › question
[2026-03-14 17:34:26.917] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: 现在柚子社的官方补丁在哪里啊? - 知乎 - https://www.zhihu.com › question
[2026-03-14 17:34:26.918] [Core] [INFO] [web_searcher.main:88]: web_searcher - scraping web: store和shop有什么区别？_百度知道 - https://zhidao.baidu.com › question
[2026-03-14 17:34:26.931] [Core] [INFO] [runners.tool_loop_agent_runner:881]: Tool web_search Result: 1. .shop后缀的域名前景如何？ - 知乎

2. shopify 独立站 .com 域名与 .shop 域名区别和影响大吗？ - 知乎

3. shop和store英语都是商店，两者有什么区别_百度知道

4. 现在柚子社的官方补丁在哪里啊? - 知乎

5. store和shop有什么区别？_百度知道

[2026-03-14 17:36:32.437] [Core] [WARN] [v4.20.0] [runners.tool_loop_agent_runner:268]: Chat Model openrouter/openrouter/hunter-alpha request error: object of type 'NoneType' has no len()
Traceback (most recent call last):
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\agent\runners\tool_loop_agent_runner.py", line 243, in _iter_llm_responses_with_fallback
async for resp in self._iter_llm_responses(include_model=idx == 0):
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\agent\runners\tool_loop_agent_runner.py", line 220, in _iter_llm_responses
yield await self.provider.text_chat(**payload)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 763, in text_chat
) = await self._handle_api_error(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 714, in _handle_api_error
raise e
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 751, in text_chat
llm_response = await self._query(payloads, func_tool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 264, in _query
llm_response = await self._parse_openai_completion(completion, tools)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\chuckie.astrbot_launcher\instances\0459b44f-ec59-4130-ba58-102e49802780\core\astrbot\core\provider\sources\openai_source.py", line 471, in _parse_openai_completion
if len(completion.choices) == 0:
^^^^^^^^^^^^^^^^^^^^^^^
TypeError: object of type 'NoneType' has no len()
[2026-03-14 17:36:32.448] [Core] [INFO] [respond.stage:184]: Prepare to send - /D425866BDDB69A1305199BAE0B166AFB: LLM 响应错误: All chat models failed: TypeError: object of type 'NoneType' has no len()
[2026-03-14 17:36:52.572] [Core] [WARN] [v4.20.0] [qqofficial.qqofficial_message_event:569]: [QQOfficial] post_c2c_message: API 返回 None，跳过本次发送

Are you willing to submit a PR? / 你愿意提交 PR 吗？

• Yes!

Code of Conduct

• I have read and agree to abide by the project's Code of Conduct。

[dosubot]

这是一个已知问题。错误发生在 openai_source.py 的 _parse_openai_completion 函数，当 OpenRouter 返回的 completion.choices 为 None 时，代码尝试执行 len(None) 导致 TypeError。

可能的原因：

1. 代理配置问题 - Issue #698 报告过相同的错误，原因是 OpenRouter 需要配置代理才能正常工作
2. OpenRouter API 临时异常 - 返回了空响应或格式不完整的响应
3. API 请求超时或被限流 - 导致响应不完整

建议尝试：

1. 检查是否需要配置代理（如果在国内网络环境）
2. 在 AstrBot 配置中检查 OpenRouter 的 API 端点和密钥是否正确
3. 尝试更换模型（如使用其他 OpenRouter 支持的模型）测试是否仍有问题
4. 查看 OpenRouter 控制台确认 API 调用状态

代码层面确实缺少对 completion.choices 为 None 的防御性检查，这是一个可以改进的地方。

To reply, just mention @dosu.

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