报错缺少参数TypeError: __new__() missing 1 required positional argument: 'text_a'

但我找不到这个new在哪里，也不知道怎样修改，疑惑数天，希望能得到解答！

完整报错如下，希望得到大神相助

Traceback (most recent call last):
File "run_classifier.py", line 403, in
main(args)
File "run_classifier.py", line 87, in main
phase="train")
File "/mnt/hgfs/share/ERNIE-develop/reader/task_reader.py", line 226, in data_generator
examples = self._read_tsv(input_file)
File "/mnt/hgfs/share/ERNIE-develop/reader/task_reader.py", line 268, in _read_tsv
example = Example(*line)
TypeError: __new__() missing 1 required positional argument: 'text_a'