CSRO doesn't work

[dragonyanglong]

Describe the bug
A clear and concise description of what the bug is.
I run through the example code at https://v3.pyscal.org/en/latest/examples/13_short_range_order.html, but it does not work.

To Reproduce
Steps to reproduce the behavior:

sys.find.neighbors(method='cutoff', cutoff=3)
sys.chemical.short_range_order()

Expected behavior
A clear and concise description of what you expected to happen.
It shows:

In [154]: sys.find.neighbors(method='cutoff', cutoff=cutoff)

In [155]: sys.chemical.short_range_order()
--------------------------------------------------------------------------
IndexError                               Traceback (most recent call last)
Cell In[155], line 1
----> 1 sys.chemical.short_range_order()

File ~/opt/anaconda3/envs/pyaet/lib/python3.11/site-packages/pyscal3/operations/chemical.py:67, in calculate_sro(system, reference_type, compare_type, average)
     63 system._check_neighbors()
     65 cdict = system.atoms.composition_ints
---> 67 neighbortypes = system.atoms["types"][system.atoms['neighbors']]
     68 comp_dicts = [_get_dict(neighbortype, cdict) for neighbortype in neighbortypes]
     69 local_comp = np.array([d[reference_type] for d in comp_dicts])

IndexError: arrays used as indices must be of integer (or boolean) type

In [156]:

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Desktop (please complete the following information):

• MacOS
• pyscal3 3.2.7 pypi_0 pypi