Column lengths are not equal from polars when reading parquet

[SteampunkIslande]

Using some real world kind of VCF, I had this issue with reading produced parquet file using polars:

import pyvcf2parquet as pv
import polars as pl
pv.convert_vcf("realworld_data.vcf.gz","test.parquet")

In [5]: pl.scan_parquet("test.parquet").head().collect()
Out[5]: thread 'ipython' panicked at crates/polars-core/src/fmt.rs:513:13:
The column lengths in the DataFrame are not equal.
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
---------------------------------------------------------------------------
PanicException                            Traceback (most recent call last)
<ipython-input-5-5f2079c139cc> in ?()
----> 1 pl.scan_parquet("test.parquet").head().collect()

/media/charles/SANDISK/TousLesVCF_PPI/touslesppi/venv/lib/python3.10/site-packages/decorator.py in ?(*args, **kw)
    229         def fun(*args, **kw):
    230             if not kwsyntax:
    231                 args, kw = fix(args, kw, sig)
--> 232             return caller(func, *(extras + args), **kw)

/media/charles/SANDISK/TousLesVCF_PPI/touslesppi/venv/lib/python3.10/site-packages/polars/dataframe/frame.py in ?(self)
   1425     def __repr__(self) -> str:
-> 1426         return self.__str__()

/media/charles/SANDISK/TousLesVCF_PPI/touslesppi/venv/lib/python3.10/site-packages/polars/dataframe/frame.py in ?(self)
   1422     def __str__(self) -> str:
-> 1423         return self._df.as_str()

PanicException: The column lengths in the DataFrame are not equal.

Still, using duckdb I was able to read the parquet file just as normal.