SystemError: /home/conda/feedstock_root/build_artifacts/python-split_1625973859697/work/Objects/listobject.c:138: bad argument to internal function

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Minimal code sample (that we can copy&paste without having any data)

import numpy as np
import pandas as pd
import scanpy as sc
import os
import sys

data = sc.read("data_bbknn_umap.h5ad")
sc.tl.louvain(data,resolution=res)

Traceback (most recent call last):
  File "/home/scanpy/12.bbknn0814-4/bbknn2.py", line 27, in <module>
    sc.tl.louvain(dat_merge,resolution=res)
  File "/home/scanpy/miniconda3/envs/SC2/lib/python3.9/site-packages/scanpy/tools/_louvain.py", line 132, in louvain
    g = _utils.get_igraph_from_adjacency(adjacency, directed=directed)
  File "/home/scanpy/miniconda3/envs/SC2/lib/python3.9/site-packages/scanpy/_utils/__init__.py", line 219, in get_igraph_from_adjacency
    g.es['weight'] = weights
SystemError: /home/conda/feedstock_root/build_artifacts/python-split_1625973859697/work/Objects/listobject.c:138: bad argument to internal function

Versions

Start at scanpy/tools/_louvain.py and follow the call into scanpy/_utils/init.py, especially get_igraph_from_adjacency where the traceback reports the failure. Reproduce the issue with the referenced data_bbknn_umap.h5ad input and collect the missing scanpy.logging.print_versions() output; completion requires a reproducible cause and confirmed resolution.