AttributeError: The layer "concatenate" has multiple inbound nodes

[TMosh]

I used the forum Search tool for the phrase “concatenate multiple inbound nodes”, and found this thread:

C5 Wk3 A1, Exercise 2

I don’t know why the code does not work. It looked pretty simple and to me it seemed it makes sense… AttributeError Traceback (most recent call last) in 33 34 —> 35 modelf_test(modelf) in modelf_test(target) 12 model = target(Tx, Ty, n_a, n_s, len_human_vocab, len_machine_vocab) 13 —> 14 print(summary(model)) 15 16 ~/work/W3A1/test_utils.py in summary(model) 34 result = 35 for layer in model.layers: —> 36 descriptors = [layer.c…