ValueError: could not broadcast input array from shape (211,60) into shape (1)

[ghost]

Thanks for sharing this interesting project!
I have run preprocessing of my dataset without errors, and there are 7 files in the ProcessedData directory (aperiodic_data.npy, column_list.pkl, cutoff_points.npy, frequency.npy, label_data.npy, min_max.npy, spectral_data.npy). But I run into an issue when I continue with training a model. Can you please tell what may be causing it and how to resolve it?

Traceback (most recent call last):
  File "main.py", line 47, in <module>
    singing_model = SingingModel(spectral_data, aperiodic_data, f_data, label_data, cutoff_points, model_name)
  File "/home/<path_cropped>/vocsynth-neural-singing-synthesizer/model.py", line 31, in __init__
    self.harmonic_data_set = HarmonicDataSet(spectral_data, aperiodic_data, label_data, cutoff_points)
  File "/home/<path_cropped>/vocsynth-neural-singing-synthesizer/data_handler.py", line 70, in __init__
    self.spectral_data = np.asarray(spectral_array)
  File "/home/<path_cropped>/lib/python3.8/site-packages/numpy/core/_asarray.py", line 85, in asarray
    return array(a, dtype, copy=False, order=order)
ValueError: could not broadcast input array from shape (211,60) into shape (1)