Cannot get output from notebook

I ran following code from notebook

# UNQ_C11 (UNIQUE CELL IDENTIFIER, DO NOT EDIT)
# You do not have to input any code in this cell, but it is relevant to grading, so please do not change anything

acc = test_vocabulary(X_val, Y_val, R_train)  # this might take a minute or two
print(f"accuracy on test set is {acc:.3f}")

but after several minutes there is still no output, I restart it several times, it does not help

Hi eric_yang,

Did you manage to solve this issue? If not, feel free to send me your notebook by means of a private message so I can have a look.