Unable to save SpatialData object to zarr

[npont]

Hello,
Saving a spatialdata object to zarr file throws error.

Reproducible example with blobs() dataset:

from spatialdata.datasets import blobs
sdata_github = blobs()
sdata_github.write(path_zarr+"github_report_bug.zarr",overwrite=True)

Bug description:
It throws the error:

RuntimeError: `anndata.settings.allow_write_nullable_strings` is False, because writing of `pd.arrays.{StringArray,ArrowStringArray}` is new and not supported in anndata < 0.11, still use by many people. Opt-in to writing these arrays by toggling the setting to True.
Error raised while writing key '_index' of <class 'zarr.core.group.Group'> to /tables/table/obs

Session Info:

spatialdata_io version: 0.7.0
scanpy version: 1.11.2
pandas version: 3.0.2
numpy version: 2.3.5
anndata version: 0.12.16
spatialdata version: 0.7.3
spatialdata_plot version: 0.3.4

[AlbertoFabbri93]

Try setting:

import pandas as pd
pd.options.mode.string_storage = "python"
import anndata as ad
ad.settings.allow_write_nullable_strings = True