IndexError: index 14 is out of bounds for axis 0 with size 14

[liumc14]

Hello, thank you very much for your code, but I raised the following questions during the training, may I ask why？
Traceback (most recent call last):
File "main.py", line 153, in
main()
File "main.py", line 119, in main
train_loader, val_loader, vocab_size, num_classes = prepare_data(args)
File "/home/disk/lmc/vqa-winner-cvprw-2017/data_loader.py", line 72, in prepare_data
VQAv2(root=args.data_root, train=True),
File "/home/disk/lmc/vqa-winner-cvprw-2017/data_loader.py", line 38, in init
que[i] = word2idx[word]
IndexError: index 14 is out of bounds for axis 0 with size 14

vqa-winner-cvprw-2017/data_loader.py

Line 36 in 88894c8

que[i] = word2idx[word]