ValueError: negative shift count

[wiany11]

from colbert.infra import Run, RunConfig, ColBERTConfig
from colbert import Indexer

if __name__=='__main__':
    with Run().context(RunConfig(nranks=4, experiment="msmarco")):

        config = ColBERTConfig(
            nbits=16,
            root=".",
        )
        indexer = Indexer(checkpoint="./colbertv2.0", config=config)
        indexer.index(name="msmarco.nbits=16", collection="./collection.tsv")

If I try to set nbits to 16 and index, I get the following error.

Clustering 35121672 points in 128D to 262144 clusters, redo 1 times, 20 iterations
  Preprocessing in 9.63 s
  Iteration 19 (7666.62 s, search 7389.69 s): objective=8.38992e+06 imbalance=1.247 nsplit=0       
[Jul 23, 04:56:30] Loading decompress_residuals_cpp extension (set COLBERT_LOAD_TORCH_EXTENSION_VERBOSE=True for more info)...
[Jul 23, 04:56:34] Loading packbits_cpp extension (set COLBERT_LOAD_TORCH_EXTENSION_VERBOSE=True for more info)...
Process Process-2:
Traceback (most recent call last):
  File "/home/jovyan/.conda/envs/colbert/lib/python3.8/multiprocessing/process.py", line 315, in _bootstrap
    self.run()
  File "/home/jovyan/.conda/envs/colbert/lib/python3.8/multiprocessing/process.py", line 108, in run
    self._target(*self._args, **self._kwargs)
  File "/home/jovyan/colbert-prune/experiments/ColBERTv2-reproduce/ColBERT/colbert/infra/launcher.py", line 134, in setup_new_process
    return_val = callee(config, *args)
  File "/home/jovyan/colbert-prune/experiments/ColBERTv2-reproduce/ColBERT/colbert/indexing/collection_indexer.py", line 33, in encode
    encoder.run(shared_lists)
  File "/home/jovyan/colbert-prune/experiments/ColBERTv2-reproduce/ColBERT/colbert/indexing/collection_indexer.py", line 68, in run
    self.train(shared_lists) # Trains centroids from selected passages
  File "/home/jovyan/colbert-prune/experiments/ColBERTv2-reproduce/ColBERT/colbert/indexing/collection_indexer.py", line 237, in train
    bucket_cutoffs, bucket_weights, avg_residual = self._compute_avg_residual(centroids, heldout)
  File "/home/jovyan/colbert-prune/experiments/ColBERTv2-reproduce/ColBERT/colbert/indexing/collection_indexer.py", line 315, in _compute_avg_residual
    compressor = ResidualCodec(config=self.config, centroids=centroids, avg_residual=None)
  File "/home/jovyan/colbert-prune/experiments/ColBERTv2-reproduce/ColBERT/colbert/indexing/codecs/residual.py", line 61, in __init__
    x = (i >> (j - self.nbits)) & mask
ValueError: negative shift count

nbits = 16 and k = 1000 seem to be correct configuration of the ColBERTv2 paper. How can I reproduce the experiment?