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Tongyi Plugin 0.0.22 with Qwen3-8B by use Function calling in Agent node raise error: "PluginInvokeError: {"args":{},"error_type":"JSONDecodeError","message":"Extra data: line 1 column 5 (char 4)"}" #264

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opened 2026-02-16 10:18:39 -05:00 by yindo · 0 comments
yindo commented 2026-02-16 10:18:39 -05:00
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Originally created by @shaojun on GitHub (May 8, 2025).

Self Checks

  • This is only for bug report, if you would like to ask a question, please head to Discussions.
  • I have searched for existing issues Dify issues & Dify Official Plugins, including closed ones.
  • I confirm that I am using English to submit this report (我已阅读并同意 Language Policy).
  • [FOR CHINESE USERS] 请务必使用英文提交 Issue，否则会被关闭。谢谢！:）
  • Please do not modify this template :) and fill in all the required fields.

Dify version

1.3.1

Plugin version

0.0.22

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

when using qwen-max model(i believe it's still the qwen2), all working good.
but when change to Qwen3-8B (the official website indicates it support tooling), the error raised.
Image

and i'm using no_think mode by add no_think in system prompt, also, the suggested model parameters are all set:

For non-thinking mode, we suggest using Temperature=0.7, TopP=0.8, TopK=20, and MinP=0

✔️ Error log

"PluginInvokeError: {"args":{},"error_type":"JSONDecodeError","message":"Extra data: line 1 column 5 (char 4)"}"

Originally created by @shaojun on GitHub (May 8, 2025). ### Self Checks - [x] This is only for bug report, if you would like to ask a question, please head to [Discussions](https://github.com/langgenius/dify/discussions/categories/general). - [x] I have searched for existing issues [Dify issues](https://github.com/langgenius/dify/issues) & [Dify Official Plugins](https://github.com/langgenius/dify-official-plugins/issues), including closed ones. - [x] I confirm that I am using English to submit this report (我已阅读并同意 [Language Policy](https://github.com/langgenius/dify/issues/1542)). - [x] [FOR CHINESE USERS] 请务必使用英文提交 Issue，否则会被关闭。谢谢！:） - [x] Please do not modify this template :) and fill in all the required fields. ### Dify version 1.3.1 ### Plugin version 0.0.22 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce when using `qwen-max` model(i believe it's still the qwen2), all working good. but when change to `Qwen3-8B` (the official website indicates it support tooling), the error raised. ![Image](https://github.com/user-attachments/assets/a6cbacd7-ee6b-48bc-bf3c-85ea7a6317d3) and i'm using `no_think` mode by add `no_think` in system prompt, also, the suggested model parameters are all set: ``` For non-thinking mode, we suggest using Temperature=0.7, TopP=0.8, TopK=20, and MinP=0 ``` ### ✔️ Error log "PluginInvokeError: {"args":{},"error_type":"JSONDecodeError","message":"Extra data: line 1 column 5 (char 4)"}"
yindo added the bug label 2026-02-16 10:18:39 -05:00
yindo closed this issue 2026-02-16 10:18:39 -05:00
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Reference: langgenius/dify-official-plugins#264
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