"File extension not supported" on uploading .md files in workflow

[IFSimon]

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Dify version

1.0.0

Cloud or Self Hosted

Self Hosted (Docker), Cloud

Steps to reproduce

An error message appears: "File extension is not supported" on uploading a .md file in a workflow Some mistake on getting extension from mime, I think

Reproduction

• Platform: self hosted(docker), cloud.dify.ai
• Support File Types: Document, Custom(add .md)

✔️ Expected Behavior

No response

❌ Actual Behavior

No response

[dosubot[bot]]

Hey there, @IFSimon! 👋 I'm here to help you with bug fixes, answer questions, and assist you while you wait for a human maintainer. Let's squash those bugs together!

The error message "File extension not supported" when uploading .md files in a self-hosted Docker workflow on Dify version 1.0.0 occurs because the .md extension is not included in the DOCUMENT_EXTENSIONS list. The upload_file method in FileService checks if the file extension is in DOCUMENT_EXTENSIONS when the source is "datasets". If it is not, it raises an UnsupportedFileTypeError ^[1].

To resolve this, you can add the .md extension to the DOCUMENT_EXTENSIONS list by modifying the api/constants/__init__.py file. Here's how you can do it:

1. Open the api/constants/__init__.py file.
2. Locate the DOCUMENT_EXTENSIONS list.
3. Add "md" to the list of extensions. For example:

if dify_config.ETL_TYPE == "Unstructured":
    DOCUMENT_EXTENSIONS = ["txt", "markdown", "md", "mdx", "pdf", "html", "htm", "xlsx", "xls"]
    DOCUMENT_EXTENSIONS.extend(("doc", "docx", "csv", "eml", "msg", "pptx", "xml", "epub"))
    if dify_config.UNSTRUCTURED_API_URL:
        DOCUMENT_EXTENSIONS.append("ppt")
    DOCUMENT_EXTENSIONS.extend([ext.upper() for ext in DOCUMENT_EXTENSIONS])
else:
    DOCUMENT_EXTENSIONS = ["txt", "markdown", "md", "mdx", "pdf", "html", "htm", "xlsx", "xls", "docx", "csv"]
    DOCUMENT_EXTENSIONS.extend([ext.upper() for ext in DOCUMENT_EXTENSIONS])

This will ensure that .md files are supported in your workflow ^[2].

To continue talking to Dosu, mention @dosu.

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[kenwoodjw]

I can't reproduce in my environment

[Thanatos-L]

I have same problem with txt extention, other extention i have not tried yet.

Dify version 1.0.0

Cloud or Self Hosted Self Hosted (Docker) + windows

my chatflow like

I can upload txt in preview like blow, and the output shows model can not read uploaded file.

I can choose txt correctly in preview.

After the app published, i can not upload txt file like ：

when i drag & drop a txt file, it shows the hint "File extension not supported"

[dosubot[bot]]

Hi, @IFSimon. I'm Dosu, and I'm helping the Dify team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• You reported a bug with uploading .md files resulting in an unsupported file extension error.
• Suggested resolution involves modifying api/constants/__init__.py to include .md in DOCUMENT_EXTENSIONS.
• @kenwoodjw was unable to reproduce the issue.
• @Thanatos-L reported a similar issue with .txt files on a self-hosted Docker setup.

Next Steps:

• Please confirm if this issue is still relevant to the latest version of the Dify repository by commenting here.
• If no updates are provided, the issue will be automatically closed in 15 days.

Thank you for your understanding and contribution!

[CTD-Networks-CO-LTD]

@IFSimon @Thanatos-L Is this method helpful? issues #17967

• Updated the Dify version to 1.1.3
• I also used "PyMuPDF" in conjunction with "Doc Extractor"