Error in simu.run.stack_bands()

Hi Florian, Thanks for maintaining this package, it's been very useful. Recenty I've been getting this error when runnning tests on both Ubuntu and Windows -

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/pytools4dart/examples/use_case_0.py", line 87, in <module>
    rgb_file = simu.run.stack_bands()
  File "/usr/local/lib/python3.10/dist-packages/pytools4dart/run.py", line 590, in stack_bands
    return stack_bands(simu_output_dir, output_dir=output_dir, driver=driver, rotate=rotate, phasefile=phasefile,
  File "/usr/local/lib/python3.10/dist-packages/pytools4dart/run.py", line 304, in stack_bands
    bands = ptd.hstools.get_bands_files(simu_output_dir, band_sub_dir=band_sub_dir)
  File "/usr/local/lib/python3.10/dist-packages/pytools4dart/tools/hstools.py", line 51, in get_bands_files
    bands = pd.DataFrame([pjoin(simu_output_dir, s)
  File "/usr/local/lib/python3.10/dist-packages/pandas/core/frame.py", line 638, in __init__
    raise ValueError("columns cannot be a set")
ValueError: columns cannot be a set

Appreciate any help you can give with this.