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Validation error when creating chatflow with LM Studio and DeepSeek model Description #11721

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opened 2026-02-21 19:03:07 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 19:03:07 -05:00
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Originally created by @httkotori on GitHub (Mar 19, 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 search for existing issues, 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

1.1.0

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

I am using LM Studio to load the DeepSeek model as the LLM provider. When creating a chat assistant, everything works fine, and I can successfully call the DeepSeek model. However, when I try to create a chatflow and call the model, I encounter the following error:

✔️ Expected Behavior

Based on the error message, I found a clue and tried to save the DSL file and modify the model configuration: I added the mode parameter (set to completion or chat), and after that, the error disappeared, and the model could be called normally.

❌ Actual Behavior

Run failed: 1 validation error for LLMNodeData
model.mode
Field required [type=missing, input_value={'completion_params': {'t...lynn/lmstudio/lmstudio'}, input_type=dict]
For further information visit https://errors.pydantic.dev/2.9/v/missing

Image

Originally created by @httkotori on GitHub (Mar 19, 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 [search for existing issues](https://github.com/langgenius/dify/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 1.1.0 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce I am using LM Studio to load the DeepSeek model as the LLM provider. When creating a chat assistant, everything works fine, and I can successfully call the DeepSeek model. However, when I try to create a chatflow and call the model, I encounter the following error: ### ✔️ Expected Behavior Based on the error message, I found a clue and tried to save the DSL file and modify the model configuration: I added the mode parameter (set to completion or chat), and after that, the error disappeared, and the model could be called normally. ### ❌ Actual Behavior Run failed: 1 validation error for LLMNodeData model.mode Field required [type=missing, input_value={'completion_params': {'t...lynn/lmstudio/lmstudio'}, input_type=dict] For further information visit https://errors.pydantic.dev/2.9/v/missing ![Image](https://github.com/user-attachments/assets/030aca6b-f4dc-4db3-87c1-428f8383bd50)
yindo added the 🐞 bug label 2026-02-21 19:03:07 -05:00
yindo closed this issue 2026-02-21 19:03:07 -05:00
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Reference: langgenius/dify#11721
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