IndexError: list index out of range

[r-mohammadi]

hi. I used your codes using hotpot_dev_fullwiki_v1.json as dev file. In dump_features phase I get this error:

/scripts/5_dump_features.py", line 225, in read_hotpot_examples
for _l in sel_paras[0]:
IndexError: list index out of range

I debugged code and I found that in multihop phase for some questions, no paragraph is selected.
a part of multihop file that is created is:

"5ae60426554299546bf83019": [
["Celebrity Home Entertainment"],
["BraveStarr"],
["Tottoi", "COPS (animated TV series)"]
],
"5a8cfee555429941ae14df5c": [],
"5a71166d5542994082a3e576": [
["Battle of Manila (1574)"],
["Battle of Klushino"],
["Battle of Yao (Japan)", "Battle of Alhandic"]
],

for "5a8cfee555429941ae14df5c" no paragraph is selected. so we get this exception.