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Workflow node execution error #18047

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opened 2026-02-21 19:42:54 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 19:42:54 -05:00
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Originally created by @yazf01 on GitHub (Sep 23, 2025).

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

1.8.0

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

  1. Create a workflow and publish it as a tool
  2. Create a chatflow and use the workflow tool within the chatflow
  3. Run the chatflow in preview mode

✔️ Expected Behavior

Successfully invoked the workflow node

❌ Actual Behavior

Encountered an error

Image 
Run failed: Failed to create WorkflowExecutionRepository from 'core.repositories.sqlalchemy_workflow_execution_repository.SQLAlchemyWorkflowExecutionRepository': Instance <Tenant at 0x7fbf61196180> is not bound to a Session; attribute refresh operation cannot proceed (Background on this error at: https://sqlalche.me/e/20/bhk3)
Originally created by @yazf01 on GitHub (Sep 23, 2025). ### 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 1.8.0 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce 1. Create a workflow and publish it as a tool 2. Create a chatflow and use the workflow tool within the chatflow 3. Run the chatflow in preview mode ### ✔️ Expected Behavior Successfully invoked the workflow node ### ❌ Actual Behavior Encountered an error <img width="1464" height="415" alt="Image" src="https://github.com/user-attachments/assets/fe33421c-10ff-4350-a3cd-354577d0e2de" /> ```text Run failed: Failed to create WorkflowExecutionRepository from 'core.repositories.sqlalchemy_workflow_execution_repository.SQLAlchemyWorkflowExecutionRepository': Instance <Tenant at 0x7fbf61196180> is not bound to a Session; attribute refresh operation cannot proceed (Background on this error at: https://sqlalche.me/e/20/bhk3) ```
yindo added the 🐞 bug label 2026-02-21 19:42:54 -05:00
yindo closed this issue 2026-02-21 19:42:54 -05:00
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Reference: langgenius/dify#18047
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