fix NoneType bug for ws_client.py microphone mode

zhaomingwork

2023-05-13 3dcaa9df2f056fefd87736f1cd1cd32679018ba9

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from fun_text_processing.inverse_text_normalization.id.taggers.tokenize_and_classify import ClassifyFst
from fun_text_processing.inverse_text_normalization.id.verbalizers.verbalize import VerbalizeFst
from fun_text_processing.inverse_text_normalization.id.verbalizers.verbalize_final import VerbalizeFinalFst