issue in "text_only_sample"

[Jaiaggarwaaaaal]

This issue is for a:

 [ ] bug report -> please search issues before submitting
 [ ] feature request
 [ ] documentation issue or request
 [x] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

When I run main.py in the api folder, the port connects successfully. However, when I execute main.py from the eval folder, it throws a "500 Internal Server Error"a nd the terminal output in the api directory shows the following error:
AttributeError: 'lxml.etree._ProcessingInstruction' object has no attribute 'is_phrasing'

Any log messages given by the failure

AttributeError: 'lxml.etree._ProcessingInstruction' object has no attribute 'is_phrasing'

Expected/desired behavior

I updated the unstructured library to version 0.15.9 due to issues with the old version, when running the requirements file in the api folder. However, after updating, the text-only sample raw files fail to process and throw the error, while the vision_and_text_sample raw files work correctly and produce output in the output folder.

OS

macOS