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prompt str is null .lose #4521

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opened 2026-02-21 18:06:52 -05:00 by yindo · 2 comments
yindo commented 2026-02-21 18:06:52 -05:00
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Originally created by @zhiqunlin on GitHub (Jul 9, 2024).

Self Checks

  • 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 (我已阅读并同意 Language Policy).
  • 请务必使用英文提交 Issue，否则会被关闭。谢谢！:）
  • Please do not modify this template :) and fill in all the required fields.

Dify version

0.6.11

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

image

output textString in LLM input to sdwebui-node .after sdwebui-ui node execute . i get this output textString in answer node,it is null

✔️ Expected Behavior

. i get this output textString in answer node,it is not null

❌ Actual Behavior

. i get this output textString in answer node,it is null
image

Originally created by @zhiqunlin on GitHub (Jul 9, 2024). ### Self Checks - [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 (我已阅读并同意 [Language Policy](https://github.com/langgenius/dify/issues/1542)). - [X] 请务必使用英文提交 Issue，否则会被关闭。谢谢！:） - [X] Please do not modify this template :) and fill in all the required fields. ### Dify version 0.6.11 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce ![image](https://github.com/langgenius/dify/assets/10475902/4b909ad7-2b6f-4b2d-9870-6e1404136d9c) output textString in LLM input to sdwebui-node .after sdwebui-ui node execute . i get this output textString in answer node,it is null ### ✔️ Expected Behavior . i get this output textString in answer node,it is not null ### ❌ Actual Behavior . i get this output textString in answer node,it is null ![image](https://github.com/langgenius/dify/assets/10475902/4f6339c5-3399-4c1e-967b-66b569519c31)
yindo added the 🐞 bug label 2026-02-21 18:06:52 -05:00
yindo closed this issue 2026-02-21 18:06:52 -05:00
yindo commented 2026-02-21 18:06:52 -05:00
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@dosubot[bot] commented on GitHub (Jul 9, 2024):

@zhiqunlin Hello! I'm here to help you with any bugs, questions, or contributions while you wait for a human maintainer. Let's get to the bottom of this together.

The issue you're experiencing with the output textString being null in the sdwebui-node could be related to several factors. Here are some steps and considerations to help diagnose and potentially resolve the issue:

  1. Check Logs for Errors:
    Review the logs generated by the sdwebui-node to identify any specific error messages. You can access detailed logs by clicking "View Log—Details" and "View Log—Trace" to see the input/output, token consumption, runtime duration, etc., of each node throughout the workflow [1].

  2. Input Variable Configuration:
    Ensure that the input variables are correctly configured. The sdwebui-node processes input variables by defining them in the input variables section and referencing them within the code. Verify that the input variables are of the expected data types and structures [2].

  3. Environment Variables:
    Confirm that the necessary environment variables are set correctly in your Docker environment. Specifically, ensure that BASE_URL and MODEL are correctly configured for the Stable Diffusion WebUI [3].

  4. Default Logging Level:
    Increase the logging level to DEBUG to get more detailed logs, which can help in debugging the issue. You can set the LOG_LEVEL environment variable to DEBUG in your Docker Compose file [4].

  5. Error Handling:
    The error message Failed to extract result from function call or text response, using empty result indicates that the system failed to extract the result from either a function call or a text response. This fallback to an empty result might be causing the null output. Investigate the function call or text response handling in your workflow [5].

By following these steps, you should be able to gather more information about why the output textString is null and take appropriate actions to resolve the issue.

To continue talking to Dosu, mention @dosu.

@dosubot[bot] commented on GitHub (Jul 9, 2024): <!-- Greeting --> @zhiqunlin Hello! I'm here to help you with any bugs, questions, or contributions while you wait for a human maintainer. Let's get to the bottom of this together. <!-- Answer --> The issue you're experiencing with the `output textString` being null in the `sdwebui-node` could be related to several factors. Here are some steps and considerations to help diagnose and potentially resolve the issue: 1. **Check Logs for Errors**: Review the logs generated by the `sdwebui-node` to identify any specific error messages. You can access detailed logs by clicking "View Log—Details" and "View Log—Trace" to see the input/output, token consumption, runtime duration, etc., of each node throughout the workflow <sup>[[1]](https://github.com/langgenius/dify-docs/blob/main/en/guides/workflow/debug-and-preview/log.md)</sup>. 2. **Input Variable Configuration**: Ensure that the input variables are correctly configured. The `sdwebui-node` processes input variables by defining them in the `input variables` section and referencing them within the code. Verify that the input variables are of the expected data types and structures <sup>[[2]](https://github.com/langgenius/dify-docs/blob/main/en/guides/workflow/node/code.md)</sup>. 3. **Environment Variables**: Confirm that the necessary environment variables are set correctly in your Docker environment. Specifically, ensure that `BASE_URL` and `MODEL` are correctly configured for the Stable Diffusion WebUI <sup>[[3]](https://github.com/langgenius/dify/blob/main/api/core/tools/provider/builtin/stablediffusion/stablediffusion.yaml)</sup>. 4. **Default Logging Level**: Increase the logging level to `DEBUG` to get more detailed logs, which can help in debugging the issue. You can set the `LOG_LEVEL` environment variable to `DEBUG` in your Docker Compose file <sup>[[4]](https://github.com/langgenius/dify/blob/main/docker/docker-compose.yaml)</sup>. 5. **Error Handling**: The error message `Failed to extract result from function call or text response, using empty result` indicates that the system failed to extract the result from either a function call or a text response. This fallback to an empty result might be causing the null output. Investigate the function call or text response handling in your workflow <sup>[[5]](https://github.com/langgenius/dify/blob/main/api/tests/integration_tests/workflow/nodes/test_parameter_extractor.py)</sup>. By following these steps, you should be able to gather more information about why the `output textString` is null and take appropriate actions to resolve the issue. <!-- Dosu Comment Footer --> *To continue talking to [Dosu](https://dosu.dev), mention @dosu.*
yindo commented 2026-02-21 18:06:52 -05:00
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@crazywoola commented on GitHub (Aug 21, 2024):

It should be resolved now.

@crazywoola commented on GitHub (Aug 21, 2024): It should be resolved now.
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Reference: langgenius/dify#4521
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