Error converting pptx file with charts

[mrflory]

openkb add PATH fails for a pptx file with the following error. The process is not continued with the next file but aborted completely.

Traceback:

Traceback (most recent call last):
  File "PATH/.venv/lib/python3.14/site-packages/markitdown/_markitdown.py", line 1715, in _convert
    res = converter.convert(local_path, **_kwargs)
  File "PATH/.venv/lib/python3.14/site-packages/markitdown/_markitdown.py", line 903, in convert
    md_content += self._convert_chart_to_markdown(shape.chart)
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "PATH/.venv/lib/python3.14/site-packages/markitdown/_markitdown.py", line 952, in _convert_chart_to_markdown
    row.append(series.values[idx])
               ^^^^^^^^^^^^^
  File "PATH/.venv/lib/python3.14/site-packages/pptx/chart/series.py", line 83, in values
    return tuple(iter_values())
  File "PATH/.venv/lib/python3.14/site-packages/pptx/chart/series.py", line 81, in iter_values
    yield val.pt_v(idx)
          ~~~~~~~~^^^^^
  File "PATH/.venv/lib/python3.14/site-packages/pptx/oxml/chart/series.py", line 103, in pt_v
    return results[0].value if results else None
           ^^^^^^^^^^^^^^^^
  File "PATH/.venv/lib/python3.14/site-packages/pptx/oxml/chart/series.py", line 254, in value
    return float(self.v.text)
ValueError: could not convert string to float: '#N/A'

[KylinMountain]

Thanks for the trace — that pointed straight at it.

Root cause is in python-pptx: CT_StrVal_NumVal_Composite.value does a bare float(self.v.text) and chokes on #N/A / #DIV/0! / blanks. Upstream hasn't fixed it.

Your trace (_markitdown.py:1715) is from pre-0.1.0 markitdown, where the error propagated out. Since 0.1.2 markitdown wraps chart parsing in except Exception and falls back to [unsupported chart] — no more abort.

Fix in #65: bumped markitdown floor to >=0.1.5. After pip install -U openkb your pptx will convert through; the offending chart becomes [unsupported chart] rather than killing the file. Chart numeric data is still lost — open a follow-up if that matters and we can add a higher-fidelity pptx path.