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The variable aggregator node is given two input variables, but only the first one is actually input. #18186

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opened 2026-02-21 19:44:37 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 19:44:37 -05:00
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Originally created by @yj11 on GitHub (Sep 24, 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

The previous step of the aggregation node is two LLM nodes, one answering "Who are you?" and the other answering "What is the highest mountain?". It only inputs the response of the first LLM node and not the second one. The output is also just the input of the first one.

Image Image

✔️ Expected Behavior

The input of the aggregation node is the response of two LLM nodes, and the output is the aggregation of the responses of two LLM nodes.

❌ Actual Behavior

Only the response of the first LLM node is input and output

Originally created by @yj11 on GitHub (Sep 24, 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 The previous step of the aggregation node is two LLM nodes, one answering "Who are you?" and the other answering "What is the highest mountain?". It only inputs the response of the first LLM node and not the second one. The output is also just the input of the first one. <img width="1250" height="464" alt="Image" src="https://github.com/user-attachments/assets/d2b4c1e0-c70e-41a1-97f8-6f6de3310494" /> <img width="1778" height="1296" alt="Image" src="https://github.com/user-attachments/assets/6f7c129a-14f4-4710-9dc5-624f2148b0a0" /> ### ✔️ Expected Behavior The input of the aggregation node is the response of two LLM nodes, and the output is the aggregation of the responses of two LLM nodes. ### ❌ Actual Behavior Only the response of the first LLM node is input and output
yindo added the 🐞 bug label 2026-02-21 19:44:37 -05:00
yindo closed this issue 2026-02-21 19:44:37 -05:00
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Reference: langgenius/dify#18186
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