C3W1 Excercise 2

I got stuck at the second exercise and I am not sure if I understand 100% what am I doing wrong. I get this output of my data generator function. Any help highly appreciated :slight_smile:

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Thanks! I sent the notebook

target_l has a bug. When adding 2 numpy arrays, element-wise addition is performed instead of concatenation.
Please use either python lists or concatenate the arrays using np.concatenate((a, b))

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Thank you for your help :slight_smile: