TypeError: int() argument must be a string, a bytes-like object or a number, not 'map'

[AkritiRao]

ERROR LOG:

C:\Python35\python.exe C:/MainProject/show_attend_and_tell/model_tensorflow.py
Using TensorFlow backend.
preprocessing word counts and creating vocab based on word count threshold 30
filtered words from 20326 to 2942
Traceback (most recent call last):
  File "C:/MainProject/show_attend_and_tell/model_tensorflow.py", line 334, in <module>
    train()
  File "C:/MainProject/show_attend_and_tell/model_tensorflow.py", line 255, in train
    n_lstm_steps=int(maxlen)+1, # w1~wN까지 예측한 뒤 마지막에 '.'예측해야하니까 +1
TypeError: int() argument must be a string, a bytes-like object or a number, not 'map'

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Process finished with exit code 1

Can anyone please tell me how to continue from here ?