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jinja2.exceptions.UndefinedError: list object has o element 0 error: exit status 255 #18063

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opened 2026-02-21 19:43:07 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 19:43:07 -05:00
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Originally created by @KrisHe666 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

Self Hosted (Docker)

Steps to reproduce

Traceback (most recent call last): File "/var/sandbox/sandbox-pythnon/tmp/db944fff_5487_49de_9523_c20
73c407a79.py", line 48, in File "", line 16, in File "", line 7, in main
File "/usr/local/lib/python3.10/site-packages/jinja2/environment.py", line 1291, in render self.environmen
t.handle_exception() File "/usr/local/lib/python3.10/site-packages//jinja2/environment.py", line 925, in ha
ndle_exception raise rewrite_traceback_stack(source=source) File "", line 1, in top-level temp
ate code File */usr/local/lib/python3.10/site-packages/jinja2/environmerht.py", line 474, in getattr return
getattr(obj, attribute) jinja2.exceptions.UndefinedError: list object has o element 0 error: exit status 255

Image

✔️ Expected Behavior

12

❌ Actual Behavior

No response

Originally created by @KrisHe666 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 Self Hosted (Docker) ### Steps to reproduce Traceback (most recent call last): File "/var/sandbox/sandbox-pythnon/tmp/db944fff_5487_49de_9523_c20 73c407a79.py", line 48, in <module> File "<string>", line 16, in <rmodule> File "<string>", line 7, in main File "/usr/local/lib/python3.10/site-packages/jinja2/environment.py", line 1291, in render self.environmen t.handle_exception() File "/usr/local/lib/python3.10/site-packages//jinja2/environment.py", line 925, in ha ndle_exception raise rewrite_traceback_stack(source=source) File "<tempplate>", line 1, in top-level temp ate code File */usr/local/lib/python3.10/site-packages/jinja2/environmerht.py", line 474, in getattr return getattr(obj, attribute) jinja2.exceptions.UndefinedError: list object has o element 0 error: exit status 255 ![Image](https://github.com/user-attachments/assets/0c37a8c7-1a4c-4c8a-835a-98745edf5fc3) ### ✔️ Expected Behavior 12 ### ❌ Actual Behavior _No response_
yindo added the 🐞 bug label 2026-02-21 19:43:07 -05:00
yindo closed this issue 2026-02-21 19:43:07 -05:00
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Reference: langgenius/dify#18063
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