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[PR #30434] fix(api): Permission denied: '/home/dify' when uploading .pptx file in Document Extractor Node #32815

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opened 2026-02-21 20:52:08 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 20:52:08 -05:00
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Original Pull Request: https://github.com/langgenius/dify/pull/30434

State: closed
Merged: No

Important

  1. Make sure you have read our contribution guidelines
  2. Ensure there is an associated issue and you have been assigned to it
  3. Use the correct syntax to link this PR: Fixes #<issue number>.

Summary

Fixes #30092

The reason for the error is the unstructured parsing of the .pptx file, which requires the nltk averaged_perceptron_tagger_eng and punkt_tab packages. When automatically downloading, the directory selected was /home/dify, but there was no write permission. Simply pre-installing these two packages will solve the problem.

unstructured.nlp.tokenize.download_nltk_packages()

def download_nltk_packages():
    """If required NLTK packages are not available, download them."""

    tagger_available = check_for_nltk_package(
        package_category="taggers",
        package_name="averaged_perceptron_tagger_eng",
    )
    tokenizer_available = check_for_nltk_package(
        package_category="tokenizers", package_name="punkt_tab"
    )

    if (not tokenizer_available) or (not tagger_available):
        nltk.download("averaged_perceptron_tagger_eng", quiet=True)
        nltk.download("punkt_tab", quiet=True)

error log

2025-12-31 17:42:15.761 | 2025-12-31 09:42:15.758 ERROR [GraphWorker-0] [node.py:336]  - Node 1767171946516 failed to run
2025-12-31 17:42:15.761 | Traceback (most recent call last):
2025-12-31 17:42:15.761 |   File "/app/api/core/workflow/nodes/base/node.py", line 318, in run
2025-12-31 17:42:15.761 |     result = self._run()
2025-12-31 17:42:15.761 |              ^^^^^^^^^^^
2025-12-31 17:42:15.761 |   File "/app/api/core/workflow/nodes/document_extractor/node.py", line 67, in _run
2025-12-31 17:42:15.761 |     extracted_text_list = list(map(_extract_text_from_file, value))
2025-12-31 17:42:15.761 |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-12-31 17:42:15.761 |   File "/app/api/core/workflow/nodes/document_extractor/node.py", line 426, in _extract_text_from_file
2025-12-31 17:42:15.761 |     extracted_text = _extract_text_by_file_extension(file_content=file_content, file_extension=file.extension)
2025-12-31 17:42:15.761 |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-12-31 17:42:15.761 |   File "/app/api/core/workflow/nodes/document_extractor/node.py", line 216, in _extract_text_by_file_extension
2025-12-31 17:42:15.761 |     return _extract_text_from_pptx(file_content)
2025-12-31 17:42:15.761 |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-12-31 17:42:15.761 |   File "/app/api/core/workflow/nodes/document_extractor/node.py", line 548, in _extract_text_from_pptx
2025-12-31 17:42:15.761 |     from unstructured.partition.pptx import partition_pptx
2025-12-31 17:42:15.761 |   File "/app/api/.venv/lib/python3.12/site-packages/unstructured/partition/pptx.py", line 39, in <module>
2025-12-31 17:42:15.761 |     from unstructured.partition.text_type import (
2025-12-31 17:42:15.761 |   File "/app/api/.venv/lib/python3.12/site-packages/unstructured/partition/text_type.py", line 20, in <module>
2025-12-31 17:42:15.761 |     from unstructured.nlp.tokenize import pos_tag, sent_tokenize, word_tokenize
2025-12-31 17:42:15.761 |   File "/app/api/.venv/lib/python3.12/site-packages/unstructured/nlp/tokenize.py", line 48, in <module>
2025-12-31 17:42:15.761 |     download_nltk_packages()
2025-12-31 17:42:15.761 |   File "/app/api/.venv/lib/python3.12/site-packages/unstructured/nlp/tokenize.py", line 42, in download_nltk_packages
2025-12-31 17:42:15.761 |     nltk.download("averaged_perceptron_tagger_eng", quiet=True)
2025-12-31 17:42:15.761 |   File "/app/api/.venv/lib/python3.12/site-packages/nltk/downloader.py", line 762, in download
2025-12-31 17:42:15.761 |     for msg in self.incr_download(info_or_id, download_dir, force):
2025-12-31 17:42:15.761 |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-12-31 17:42:15.761 |   File "/app/api/.venv/lib/python3.12/site-packages/nltk/downloader.py", line 630, in incr_download
2025-12-31 17:42:15.761 |     yield from self._download_package(info, download_dir, force)
2025-12-31 17:42:15.761 |   File "/app/api/.venv/lib/python3.12/site-packages/nltk/downloader.py", line 686, in _download_package
2025-12-31 17:42:15.761 |     os.makedirs(download_dir, exist_ok=True)
2025-12-31 17:42:15.761 |   File "<frozen os>", line 215, in makedirs
2025-12-31 17:42:15.761 |   File "<frozen os>", line 225, in makedirs
2025-12-31 17:42:15.761 | PermissionError: [Errno 13] Permission denied: '/home/dify'
2025-12-31 17:42:15.836 | 2025-12-31 09:42:15.836 ERROR [GraphDispatcher] [error_handler.py:101]  - Node 1767171946516 failed with ABORT strategy: [Errno 13] Permission denied: '/home/dify'
2025-12-31 17:42:15.964 | 2025-12-31 09:42:15.963 ERROR [Thread-24 (_generate_worker)] [workflow_entry.py:116]  - Unknown Error when workflow entry running
2025-12-31 17:42:15.964 | Traceback (most recent call last):
2025-12-31 17:42:15.964 |   File "/app/api/core/workflow/workflow_entry.py", line 112, in run
2025-12-31 17:42:15.964 |     yield from generator
2025-12-31 17:42:15.964 |   File "/app/api/core/workflow/graph_engine/graph_engine.py", line 271, in run
2025-12-31 17:42:15.964 |     raise self._graph_execution.error
2025-12-31 17:42:15.964 | RuntimeError: [Errno 13] Permission denied: '/home/dify'

Screenshots

Before After
... ...

Checklist

  • This change requires a documentation update, included: Dify Document
  • I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
  • I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
  • I've updated the documentation accordingly.
  • I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods
**Original Pull Request:** https://github.com/langgenius/dify/pull/30434 **State:** closed **Merged:** No --- > [!IMPORTANT] > > 1. Make sure you have read our [contribution guidelines](https://github.com/langgenius/dify/blob/main/CONTRIBUTING.md) > 1. Ensure there is an associated issue and you have been assigned to it > 1. Use the correct syntax to link this PR: `Fixes #<issue number>`. ## Summary Fixes #30092 The reason for the error is the unstructured parsing of the .pptx file, which requires the nltk averaged_perceptron_tagger_eng and punkt_tab packages. When automatically downloading, the directory selected was /home/dify, but there was no write permission. Simply pre-installing these two packages will solve the problem. unstructured.nlp.tokenize.download_nltk_packages() ```python def download_nltk_packages(): """If required NLTK packages are not available, download them.""" tagger_available = check_for_nltk_package( package_category="taggers", package_name="averaged_perceptron_tagger_eng", ) tokenizer_available = check_for_nltk_package( package_category="tokenizers", package_name="punkt_tab" ) if (not tokenizer_available) or (not tagger_available): nltk.download("averaged_perceptron_tagger_eng", quiet=True) nltk.download("punkt_tab", quiet=True) ``` error log ``` 2025-12-31 17:42:15.761 | 2025-12-31 09:42:15.758 ERROR [GraphWorker-0] [node.py:336] - Node 1767171946516 failed to run 2025-12-31 17:42:15.761 | Traceback (most recent call last): 2025-12-31 17:42:15.761 | File "/app/api/core/workflow/nodes/base/node.py", line 318, in run 2025-12-31 17:42:15.761 | result = self._run() 2025-12-31 17:42:15.761 | ^^^^^^^^^^^ 2025-12-31 17:42:15.761 | File "/app/api/core/workflow/nodes/document_extractor/node.py", line 67, in _run 2025-12-31 17:42:15.761 | extracted_text_list = list(map(_extract_text_from_file, value)) 2025-12-31 17:42:15.761 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2025-12-31 17:42:15.761 | File "/app/api/core/workflow/nodes/document_extractor/node.py", line 426, in _extract_text_from_file 2025-12-31 17:42:15.761 | extracted_text = _extract_text_by_file_extension(file_content=file_content, file_extension=file.extension) 2025-12-31 17:42:15.761 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2025-12-31 17:42:15.761 | File "/app/api/core/workflow/nodes/document_extractor/node.py", line 216, in _extract_text_by_file_extension 2025-12-31 17:42:15.761 | return _extract_text_from_pptx(file_content) 2025-12-31 17:42:15.761 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2025-12-31 17:42:15.761 | File "/app/api/core/workflow/nodes/document_extractor/node.py", line 548, in _extract_text_from_pptx 2025-12-31 17:42:15.761 | from unstructured.partition.pptx import partition_pptx 2025-12-31 17:42:15.761 | File "/app/api/.venv/lib/python3.12/site-packages/unstructured/partition/pptx.py", line 39, in <module> 2025-12-31 17:42:15.761 | from unstructured.partition.text_type import ( 2025-12-31 17:42:15.761 | File "/app/api/.venv/lib/python3.12/site-packages/unstructured/partition/text_type.py", line 20, in <module> 2025-12-31 17:42:15.761 | from unstructured.nlp.tokenize import pos_tag, sent_tokenize, word_tokenize 2025-12-31 17:42:15.761 | File "/app/api/.venv/lib/python3.12/site-packages/unstructured/nlp/tokenize.py", line 48, in <module> 2025-12-31 17:42:15.761 | download_nltk_packages() 2025-12-31 17:42:15.761 | File "/app/api/.venv/lib/python3.12/site-packages/unstructured/nlp/tokenize.py", line 42, in download_nltk_packages 2025-12-31 17:42:15.761 | nltk.download("averaged_perceptron_tagger_eng", quiet=True) 2025-12-31 17:42:15.761 | File "/app/api/.venv/lib/python3.12/site-packages/nltk/downloader.py", line 762, in download 2025-12-31 17:42:15.761 | for msg in self.incr_download(info_or_id, download_dir, force): 2025-12-31 17:42:15.761 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2025-12-31 17:42:15.761 | File "/app/api/.venv/lib/python3.12/site-packages/nltk/downloader.py", line 630, in incr_download 2025-12-31 17:42:15.761 | yield from self._download_package(info, download_dir, force) 2025-12-31 17:42:15.761 | File "/app/api/.venv/lib/python3.12/site-packages/nltk/downloader.py", line 686, in _download_package 2025-12-31 17:42:15.761 | os.makedirs(download_dir, exist_ok=True) 2025-12-31 17:42:15.761 | File "<frozen os>", line 215, in makedirs 2025-12-31 17:42:15.761 | File "<frozen os>", line 225, in makedirs 2025-12-31 17:42:15.761 | PermissionError: [Errno 13] Permission denied: '/home/dify' 2025-12-31 17:42:15.836 | 2025-12-31 09:42:15.836 ERROR [GraphDispatcher] [error_handler.py:101] - Node 1767171946516 failed with ABORT strategy: [Errno 13] Permission denied: '/home/dify' 2025-12-31 17:42:15.964 | 2025-12-31 09:42:15.963 ERROR [Thread-24 (_generate_worker)] [workflow_entry.py:116] - Unknown Error when workflow entry running 2025-12-31 17:42:15.964 | Traceback (most recent call last): 2025-12-31 17:42:15.964 | File "/app/api/core/workflow/workflow_entry.py", line 112, in run 2025-12-31 17:42:15.964 | yield from generator 2025-12-31 17:42:15.964 | File "/app/api/core/workflow/graph_engine/graph_engine.py", line 271, in run 2025-12-31 17:42:15.964 | raise self._graph_execution.error 2025-12-31 17:42:15.964 | RuntimeError: [Errno 13] Permission denied: '/home/dify' ``` <!-- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change. --> ## Screenshots | Before | After | |--------|-------| | ... | ... | ## Checklist - [ ] This change requires a documentation update, included: [Dify Document](https://github.com/langgenius/dify-docs) - [x] I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!) - [x] I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change. - [x] I've updated the documentation accordingly. - [x] I ran `dev/reformat`(backend) and `cd web && npx lint-staged`(frontend) to appease the lint gods
yindo added the pull-request label 2026-02-21 20:52:08 -05:00
yindo closed this issue 2026-02-21 20:52:08 -05:00
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Reference: langgenius/dify#32815
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