c3Week3 fit_vectorizer gives AttributeError: 'NoneType' object has no attribute 'vocabulary_size

please post screenshot of the error without posting any grade cell codes. Also confirm if your query is from week 3 or week 2

the fit vectorizer required one to instantiate tokenizer class using TextVectorization function and use the standardize as well as assign MAX_LEN(max length) to the output sequence length, to make sure when the vectorizer was adapt to fit the sentences, the desired vocabulary size is selected.