Issue with paratext.load_csv_to_pandas() about paratext HOT 4 OPEN

Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "/Applications/PyCharm.app/Contents/helpers/pydev/_pydev_bundle/pydev_umd.py", line 197, in runfile
    pydev_imports.execfile(filename, global_vars, local_vars)  # execute the script
  File "/Applications/PyCharm.app/Contents/helpers/pydev/_pydev_imps/_pydev_execfile.py", line 18, in execfile
    exec(compile(contents+"\n", file, 'exec'), glob, loc)
  File "/Users/restifo/PycharmProjects/bulk-rnaseq/util.py", line 5, in <module>
    df = paratext.load_csv_to_pandas("./data/TcgaTargetGtex_RSEM_Hugo_norm_count", num_threads=7)
  File "/Users/restifo/anaconda3/envs/bulk-rnaseq/lib/python3.7/site-packages/paratext/core.py", line 403, in load_csv_to_pandas
    return pandas.DataFrame.from_items(expanded)
  File "/Users/restifo/anaconda3/envs/bulk-rnaseq/lib/python3.7/site-packages/pandas/core/frame.py", line 1782, in from_items
    keys, values = lzip(*items)
  File "/Users/restifo/anaconda3/envs/bulk-rnaseq/lib/python3.7/site-packages/paratext/core.py", line 355, in load_csv_to_expanded_columns
    for name, col, semantics, levels in load_raw_csv(filename, *args, **kwargs):
  File "/Users/restifo/anaconda3/envs/bulk-rnaseq/lib/python3.7/site-packages/paratext/core.py", line 298, in load_raw_csv
    loader = internal_create_csv_loader(filename, *args, **kwargs)
  File "/Users/restifo/anaconda3/envs/bulk-rnaseq/lib/python3.7/site-packages/paratext/core.py", line 188, in internal_create_csv_loader
    loader.load(_make_posix_filename(filename), params)
  File "/Users/restifo/anaconda3/envs/bulk-rnaseq/lib/python3.7/site-packages/paratext/core.py", line 120, in _make_posix_filename
    if ntpath.splitdrive(fn_or_uri)[0] or ntpath.splitunc(fn_or_uri)[0]:
AttributeError: module 'ntpath' has no attribute 'splitunc'

> print(sys.version)
3.7.3 | packaged by conda-forge | (default, Mar 27 2019, 15:43:19) 
[Clang 4.0.1 (tags/RELEASE_401/final)]