Error with pegasus.calc_kBET

[hl-xue]

Hello,

I encountered an error while using pegasus.calc_kBET.
My function call is like:

pg.calc_kBET(data, attr="batch", rep="pca_harmony", random_state=0)

where my data.obs["batch"] is category type with character strings.
The error was:

Traceback (most recent call last):
...
File "...lib/python3.9/site-packages/pegasus/tools/nearest_neighbors.py", line 409, in calc_kBET
    attr_values.categories = range(nbatch)
AttributeError: can't set attribute

Do you have any idea about this please?

Thanks.