TypeError: sparse_to_dense() missing 2 required positional arguments

[bigcat2333]

在运行bidaf_squadv2.py时遇到了如下报错：
File "G:\SMRCToolkit-master\sogou_mrc\data\batch_generator.py", line 121, in extract_char
out = tf.sparse.to_dense(out, default_value=default_value)
AttributeError: module 'tensorflow' has no attribute 'sparse'

我将文件中的tf.sparse.to_dense改为tf.sparse_to_dense,但是依旧报错
File "G:\SMRCToolkit-master\sogou_mrc\data\batch_generator.py", line 145, in transform_new_instance
context_char = extract_char(context_tokens)
File "G:\SMRCToolkit-master\sogou_mrc\data\batch_generator.py", line 121, in extract_char
out = tf.sparse_to_dense(out, default_value=default_value)
TypeError: sparse_to_dense() missing 2 required positional arguments: 'output_shape' and 'sparse_values'
请问这个问题该如何解决呢？

[yxk9810]

This repo was tested on Python 3 and Tensorflow 1.12. Please check version of Tensorflow.