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Failed to transform agent message: PluginInvokeError: {"args":{},"error_type":"AttributeError","message":"'NoneType' object has no attribute 'parameters'"} #265

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opened 2026-02-16 10:18:40 -05:00 by yindo · 1 comment
yindo commented 2026-02-16 10:18:40 -05:00
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Originally created by @zhizhang202311 on GitHub (May 9, 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

junjiem-mcp_see_agent_0.1.5

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

Using the agent node in chatflow. Choose the API for silicon-based flow to call AI, only a small portion of AI will not report errors when running, such as Deepseek v1, r1_256b; qwen3_30b_A3B

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.。 Other models in the qwen3 series and deepseekr1 series will report errors
Failed to transform agent message: PluginInvokeError: {"args":{},"error_type":"AttributeError","message":"'NoneType' object has no attribute 'parameters'"}
I switched to the API call of Tongyi Qianwen and the result was the same.

✔️ Error log

Failed to transform agent message: PluginInvokeError: {"args":{},"error_type":"AttributeError","message":"'NoneType' object has no attribute 'parameters'"}

Originally created by @zhizhang202311 on GitHub (May 9, 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 junjiem-mcp_see_agent_0.1.5 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce Using the agent node in chatflow. Choose the API for silicon-based flow to call AI, only a small portion of AI will not report errors when running, such as Deepseek v1, r1_256b; qwen3_30b_A3B ![Image](https://github.com/user-attachments/assets/fd60bc31-20f6-40cf-bacf-3c4ecd2f2082) ![Image](https://github.com/user-attachments/assets/72215eef-ed92-4b14-b9d9-d418bbeef0bb) ![Image](https://github.com/user-attachments/assets/4bf40bb4-7140-4667-90fd-e0d4fabcb192) .。 Other models in the qwen3 series and deepseekr1 series will report errors Failed to transform agent message: PluginInvokeError: {"args":{},"error_type":"AttributeError","message":"'NoneType' object has no attribute 'parameters'"} I switched to the API call of Tongyi Qianwen and the result was the same. ### ✔️ Error log Failed to transform agent message: PluginInvokeError: {"args":{},"error_type":"AttributeError","message":"'NoneType' object has no attribute 'parameters'"}
yindo added the bug label 2026-02-16 10:18:40 -05:00
yindo closed this issue 2026-02-16 10:18:40 -05:00
yindo commented 2026-02-16 10:18:40 -05:00
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@dosubot[bot] commented on GitHub (Aug 15, 2025):

Hi, @zhizhang202311. I'm Dosu, and I'm helping the dify-official-plugins team manage their backlog and am marking this issue as stale.

Issue Summary:

  • You reported an error "Failed to transform agent message: PluginInvokeError" caused by an AttributeError related to 'NoneType' object lacking 'parameters'.
  • The issue occurs when using the agent node in chatflow with specific AI models (qwen3 and deepseekr1 series) on Dify v1.3.1 and plugin junjiem-mcp_see_agent_0.1.5.
  • This happens consistently in your self-hosted Docker environment and also appears when switching to the Tongyi Qianwen API.
  • The problem does not occur with all models, indicating a model-specific issue.
  • No further comments or updates have been provided since the initial report.

Next Steps:

  • Please let me know if this issue is still relevant with the latest version of dify-official-plugins by commenting here.
  • If I do not hear back within 5 days, I will automatically close this issue.

Thank you for your understanding and contribution!

@dosubot[bot] commented on GitHub (Aug 15, 2025): Hi, @zhizhang202311. I'm [Dosu](https://dosu.dev), and I'm helping the dify-official-plugins team manage their backlog and am marking this issue as stale. **Issue Summary:** - You reported an error "Failed to transform agent message: PluginInvokeError" caused by an AttributeError related to 'NoneType' object lacking 'parameters'. - The issue occurs when using the agent node in chatflow with specific AI models (qwen3 and deepseekr1 series) on Dify v1.3.1 and plugin junjiem-mcp_see_agent_0.1.5. - This happens consistently in your self-hosted Docker environment and also appears when switching to the Tongyi Qianwen API. - The problem does not occur with all models, indicating a model-specific issue. - No further comments or updates have been provided since the initial report. **Next Steps:** - Please let me know if this issue is still relevant with the latest version of dify-official-plugins by commenting here. - If I do not hear back within 5 days, I will automatically close this issue. Thank you for your understanding and contribution!
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Reference: langgenius/dify-official-plugins#265
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