In deep-learning-keras-tf-tutorial/42_word2vec_gensim/42_word2vec_gensim.ipynb code-block-3 The reading file name should be changed to "reviews_Cell_Phones_and_Accessories_5.json" instead of "Cell_Phones_and_Accessories_5.json".

df = pd.read_json("reviews_Cell_Phones_and_Accessories_5.json", lines=True)

Thanks!!