PIL.PdfParser.PdfFormatError: xref entry duplicated (and not identical)

[leo20160311]

Hi boss
My program encountered a problem and I don't know how to solve it, please help, thanks
I have sent the relevant documents to email: [aclark@python-pillow.org]

this is my code:

my_bytes = open(tiffilepath, 'rb').read()
my_image = Image.open(BytesIO(my_bytes))
my_image.save(fp=dstfilepath, append=True)
my_image.close()

error:

    my_image.save(fp=outpdfpath, append=True)
  File "C:\Users\S0049\AppData\Local\Programs\Python\Python39\lib\site-packages\PIL\Image.py", line 2431, in save
    save_handler(self, fp, filename)
  File "C:\Users\S0049\AppData\Local\Programs\Python\Python39\lib\site-packages\PIL\PdfImagePlugin.py", line 52, in _save
    existing_pdf = PdfParser.PdfParser(f=fp, filename=filename, mode="r+b")
  File "C:\Users\S0049\AppData\Local\Programs\Python\Python39\lib\site-packages\PIL\PdfParser.py", line 379, in __init__
    self.read_pdf_info()
  File "C:\Users\S0049\AppData\Local\Programs\Python\Python39\lib\site-packages\PIL\PdfParser.py", line 545, in read_pdf_info
    self.read_trailer()
  File "C:\Users\S0049\AppData\Local\Programs\Python\Python39\lib\site-packages\PIL\PdfParser.py", line 639, in read_trailer
    self.read_prev_trailer(self.trailer_dict[b"Prev"])
  File "C:\Users\S0049\AppData\Local\Programs\Python\Python39\lib\site-packages\PIL\PdfParser.py", line 642, in read_prev_trailer
    trailer_offset = self.read_xref_table(xref_section_offset=xref_section_offset)
  File "C:\Users\S0049\AppData\Local\Programs\Python\Python39\lib\site-packages\PIL\PdfParser.py", line 965, in read_xref_table
    check_format_condition(
  File "C:\Users\S0049\AppData\Local\Programs\Python\Python39\lib\site-packages\PIL\PdfParser.py", line 78, in check_format_condition
    raise PdfFormatError(error_message)
PIL.PdfParser.PdfFormatError: xref entry duplicated (and not identical)

[radarhere]

So to be clear, you're not able to attach the TIFF image here? I presume because you're not comfortable posting the image publicly?

[radarhere]

Having seen another issue that you've created recently, it appears that you just don't think you can post TIFF images here.

I know that GitHub will say 'We don't support that file type' if you try and upload a TIFF image directly. However, you can either
a) create a zip of the image, and then upload that
or
b) just change the file extension to something else, from '.tiff' to say '.txt', and then upload that

[leo20160311]

Thank you for your patient guidance. By dragging and dropping, I was able to upload files. Thank you very much:
TIFF.zip

[leo20160311]

Yes, just because I don't know how to upload the problematic file, I'm very sorry

So to be clear, you're not able to attach the TIFF image here? I presume because you're not comfortable posting the image publicly?

no, just because I don't know how to upload the problematic file, I'm very sorry

[radarhere]

How did you create this PDF?