dosubot[bot]
commented
10 months ago 🤖
Hello @SouSingh! I'm Dosu, a bot here to assist you with your LangChain issues, answer your questions, and guide you to become a contributor while we wait for a human maintainer. Let's tackle this together!
The warning you're seeing, WARNING:pypdf._reader:incorrect startxref pointer(3), is likely due to the PyPDF library encountering an issue while trying to parse the PDF file. This could be due to the PDF file being corrupted or not adhering to the expected PDF structure.
The PyPDFDirectoryLoader and PyPDFLoader classes in LangChain use the PyPDF library to load and parse PDF files. If the PDF file is not properly structured or contains elements that PyPDF cannot handle, it may result in warnings or errors.
In your case, it seems like the PDF file is being loaded, but the load_and_split() method is returning an empty array. This could be due to the PyPDF library not being able to extract any text from the PDF file, possibly due to the file containing mostly images or non-standard text elements.
Here are a few things you could try:
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Check if the PDF file is corrupted or not properly structured. You can do this by trying to open the file in a PDF viewer. If the file opens without any issues, it's likely not corrupted.
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Try using a different PDF library to load the PDF file. There are several other Python libraries for working with PDF files, such as PDFMiner or PyMuPDF. These libraries may be able to handle the PDF file if PyPDF cannot.
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If the PDF file contains mostly images, you might need to use an OCR (Optical Character Recognition) tool to extract the text from the images. There are several Python libraries for OCR, such as pytesseract or pyocr.
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If the PDF file contains non-standard text elements, such as text in custom fonts or unusual layouts, PyPDF might not be able to extract the text. In this case, you might need to use a more advanced PDF processing tool.
If none of these suggestions work, it would be helpful if you could provide more information about the PDF file you're trying to load. Specifically, information about the structure of the PDF file and the type of content it contains (e.g., text, images, custom fonts) would be useful.
For more information about the PyPDFDirectoryLoader and PyPDFLoader classes, you can refer to the LangChain codebase.
I hope this helps! If you have any other questions, feel free to ask.
-Dosu
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VpkPrasanna
RishavRanjan123
System Info
I try to load pdf in from langchain.document_loaders import PyPDFDirectoryLoader got error this WARNING:pypdf._reader:incorrect startxref pointer(3)
from langchain.document_loaders import PyPDFDirectoryLoader from langchain_community.document_loaders import PyPDFLoader
loader = PyPDFDirectoryLoader("/content/pdfs/Carina Lueschen Masterarbeit Ryan Trecartin (1).pdf") pages = loader.load_and_split()
will return blank array and warning error
Who can help?
@hwchase17 @agola11 @sbusso
Information
Related Components
Reproduction
just load the pdf which having images
Expected behavior
output should be in array of pdf data