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Error reading position #17994

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opened 2026-02-21 19:42:19 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 19:42:19 -05:00
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Originally created by @DavideDelbianco 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

1.9.0

Cloud or Self Hosted

Cloud

Steps to reproduce

Create a new workflow
link an end node to the start node, without any output
test run -> it works and does nothing
publish

now add a LLM node in-between and configure it to say a joke with the system prompt
do not link its output to the end node
publish

Run the workflow > tracing will show the joke in the LLM node

Now go to history tab, select the old version that had just the end node
Right click on workflow canvas and choose run

✔️ Expected Behavior

Run should be disabled in historic versions since it seems to run the currently published version
Anyway should not throw exception on that start+end flow

❌ Actual Behavior

Image
Originally created by @DavideDelbianco 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 1.9.0 ### Cloud or Self Hosted Cloud ### Steps to reproduce Create a new workflow link an end node to the start node, without any output test run -> it works and does nothing publish now add a LLM node in-between and configure it to say a joke with the system prompt do not link its output to the end node publish Run the workflow > tracing will show the joke in the LLM node Now go to history tab, select the old version that had just the end node Right click on workflow canvas and choose run ### ✔️ Expected Behavior Run should be disabled in historic versions since it seems to run the currently published version Anyway should not throw exception on that start+end flow ### ❌ Actual Behavior <img width="1244" height="771" alt="Image" src="https://github.com/user-attachments/assets/5535ccac-e4fe-445e-9e3c-58eff3fe2cd2" />
yindo added the 🐞 bug label 2026-02-21 19:42:19 -05:00
yindo closed this issue 2026-02-21 19:42:19 -05:00
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Reference: langgenius/dify#17994
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