[ALBERT] Fine-tune SQUAD, got error in `convert_examples_to_features()`

[wxp16]

In particular, the error is Index Error: list index out of range in _convert_index()

[kamalkraj]

Error: in _convert_index if index[pos] is not None: IndexError: list index out of range

[zsweet]

Have you fixed this problem?

[zheyuye]

meet same issue

[bayartsogt-ya]

@wxp16 have you fixed the problem yet?