TypeError: cast() missing 1 required positional argument: 'dtype'

[Ahapy]

It appears on line 27 of model.py, and the error occurs when creating the deviation variable.
warning：~\Anaconda3\Lib\tensoerflow-wavenet-master\wavenet\model.py:27: calling Constant.init(from tensorflow.python.ops.init_ops) with dtype is deprecated and will be removed in a future version.
Instructions for updating:
Call initializer instance with the dtype argument instead of passing it to the constructor
.......
TypeError: cast() missing 1 required positional argument: 'dtype'