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knowledge query block raise error when in a workflow. #17056

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opened 2026-02-21 19:30:45 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 19:30:45 -05:00
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Originally created by @qkxie on GitHub (Sep 9, 2025).

Originally assigned to: @JohnJyong on GitHub.

Self Checks

  • I have read the Contributing Guide and Language Policy.
  • 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, otherwise it will be closed.
  • 【中文用户 & Non English User】请使用英语提交，否则会被关闭 ：）
  • Please do not modify this template :) and fill in all the required fields.

Dify version

2.0.0-beta1

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

I have setup a knowledge base. And I add a knowledge query block in a workflow.

when I run the block itself, everything is ok:

Image

But when I run the whole workflow, the knowledge query block raise an error:

Image

✔️ Expected Behavior

the knowledge block work as well

❌ Actual Behavior

raise psycopg2 error when run in a workflow.

Originally created by @qkxie on GitHub (Sep 9, 2025). Originally assigned to: @JohnJyong on GitHub. ### Self Checks - [x] I have read the [Contributing Guide](https://github.com/langgenius/dify/blob/main/CONTRIBUTING.md) and [Language Policy](https://github.com/langgenius/dify/issues/1542). - [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, otherwise it will be closed. - [x] 【中文用户 & Non English User】请使用英语提交，否则会被关闭 ：） - [x] Please do not modify this template :) and fill in all the required fields. ### Dify version 2.0.0-beta1 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce I have setup a knowledge base. And I add a knowledge query block in a workflow. when I run the block itself, everything is ok: <img width="784" height="1708" alt="Image" src="https://github.com/user-attachments/assets/1464e486-e9a0-4349-8d8b-6eb8ae276e8d" /> But when I run the whole workflow, the knowledge query block raise an error: <img width="746" height="1402" alt="Image" src="https://github.com/user-attachments/assets/19890b20-825e-4103-9dfa-501fc5caf377" /> ### ✔️ Expected Behavior the knowledge block work as well ### ❌ Actual Behavior raise psycopg2 error when run in a workflow.
yindo added the 🐞 bugKnowledge Pipeline labels 2026-02-21 19:30:45 -05:00
yindo closed this issue 2026-02-21 19:30:45 -05:00
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Reference: langgenius/dify#17056
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