Getting this error..please help

[Pranjali87]

Running predictions: with atlas: AAL

ValueError Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_1920/1983190910.py in
4
5 _, classes = np.unique(diagnosis, return_inverse=True)
----> 6 iter_for_prediction = cv.split(timeseries, classes)
7
8 for index, (train_index, test_index) in enumerate(iter_for_prediction):

~\anaconda3\lib\site-packages\sklearn\model_selection_split.py in split(self, X, y, groups)
1791 to an integer.
1792 """
-> 1793 y = check_array(y, ensure_2d=False, dtype=None)
1794 return super().split(X, y, groups)
1795

~\anaconda3\lib\site-packages\sklearn\utils\validation.py in inner_f(*args, **kwargs)
61 extra_args = len(args) - len(all_args)
62 if extra_args <= 0:
---> 63 return f(*args, **kwargs)
64
65 # extra_args > 0

~\anaconda3\lib\site-packages\sklearn\utils\validation.py in check_array(array, accept_sparse, accept_large_sparse, dtype, order, copy, force_all_finite, ensure_2d, allow_nd, ensure_min_samples, ensure_min_features, estimator)
724 n_samples = _num_samples(array)
725 if n_samples < ensure_min_samples:
--> 726 raise ValueError("Found array with %d sample(s) (shape=%s) while a"
727 " minimum of %d is required%s."
728 % (n_samples, array.shape, ensure_min_samples,

ValueError: Found array with 0 sample(s) (shape=(0,)) while a minimum of 1 is required.

[KamalakerDadi]

Please provide a reproducible script such that I can see where the error is?
Thanks!