create an empty knowledge and empty files, vector collection not created.

[liuzhenghua]

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Dify version

0.5.10

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

bugs occured after the following steps:

1. create an empty knowledge.
2. add an empty file in web page or using create_by_text API， the text remains empty

{
    "name": "demo.txt",
    "text": "",
    "indexing_technique": "high_quality",
    "process_rule": {
        "mode": "automatic"
    }
}

3. add chunk in web page or using add segments api

✔️ Expected Behavior

the segment should be enabled.

❌ Actual Behavior

cause of the collection was not created when you upload an empty file, the chunk you created can't be successs.

[dosubot[bot]]

Hello @liuzhenghua,

I'm Dosu, a bot here to assist you with solving bugs, answering questions, and guiding you on how to contribute while you're waiting for a human maintainer. If you have any questions or need further assistance, I'm here to help. I'm currently reviewing your issue and will provide a comprehensive answer shortly.

[liuzhenghua]

由于创建空文件时，没有创建collection，下次往这个文档新建chunk的时候，无法往向量库写入数据，导致报错： "Error during query: [{'locations': [{'column': 6, 'line': 1}], 'message': 'Cannot query field "Vector_index_3b5a7bd1_2cfb_4ae2_a89c_019472e90033_Node" on type "GetObjectsObj". Did you mean "Vector_index_6038789c_2c73_4190_809c_c170be45bb47_Node"?', 'path': None}]"

[dosubot[bot]]

The issue you're encountering seems to be due to a mismatch or an incorrect query structure that does not align with the expected schema in Dify's database. The error message suggests that there's a discrepancy between the document ID and the vector index name used in your query compared to those configured in your Dify setup. Here are some steps to address this issue:

1. Verify Document ID and Vector Index Name: Ensure that the document ID and the vector index name in your query match those in your Dify setup. Any mismatch can lead to the errors you're experiencing.

2. Check Dify Version Compatibility: Confirm that the version of Dify you're using (0.5.10) supports the operations you're attempting. It might be beneficial to consult the Dify documentation or reach out to support for any known issues or updates related to vector library interactions.

3. Update Dify: Look for any updates or patches for Dify that might address this issue. Keeping your software up to date ensures you have the latest features and bug fixes.

It appears there's a lack of specific information regarding how Dify handles the creation of collections when an empty file is uploaded, as well as the expected behavior in such scenarios. If you could provide more details about your Dify setup or the steps leading up to the issue, it would help in offering a more precise solution. Additionally, sharing any error logs or messages beyond the initial query error could be beneficial.

For further guidance, you might want to refer to the Dify documentation.

Sources

• en/user-guide/creating-dify-apps/llms-use-faq.md

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[JohnJyong]

it has fix by below pr : https://github.com/langgenius/dify/pull/3021 , thanks for your feedback @liuzhenghua