What does the error message "AttributeError: 'bytes' object has no attribute 'seek'" mean when attempting to use the python-docx library for reading a docx file in FastAPI?

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This error message means that the "bytes" object being passed to the method or function in the python-docx library does not have a "seek" attribute. The "seek" attribute is used to move the current position within the file being read or written, and is typically only available on file-like objects, such as those opened with the "open" function. It's possible that the "bytes" object being passed to the library is not a valid file object, or may have been manipulated in some way that has caused the "seek" attribute to be removed.