class_weight error

[posylinnnn]

hello,

When I ran the code I encountered this error:
class_weight is causing a ValueError: The truth value of an array with more than one element is ambiguous. use a.any() or a.all().

I tried to fix it, but without success.
I saw someone's solution online:

from sklearn.utils import class_weight
weight = class_weight.compute_class_weight('balanced', np.unique(y_train), y_train)
class_weights = {l:c for l,c in zip(np.unique(labels[i]), class_weights)}

But this solution doesn't work for me, can you help me?
Thank you very much!