IndexError: string index out of range

[robotsp]

I tried to create a training dataset, but there is an error:

File "dataset.py", line 271, in
main()
File "dataset.py", line 267, in main
determiner=determiner)
File "dataset.py", line 66, in split_train_file
''.join(right_temp).replace('\u2581', ' ').replace('', '')):
File "/root/study/ersatz/ersatz/candidates.py", line 72, in call
if right_context[0] == ' ':
IndexError: string index out of range.

I prepared only one sentence in the raw data file, but it still raises this "out of range" error. How can I fix?

[rewicks]

Can you clarify what the input is? I'm somewhat confused by using only one sentence as training data.