After training for several hours and successfully saving about 5 checkpoints, training errors out with a message:
**./onmt/data/Dataset.lua:102: attempt to index a nil value** ./onmt/data/Dataset.lua:102: in function 'getBatch' ./onmt/train/Trainer.lua:277: in function 'trainEpoc' ./onmt/train/Trainer.lua:484: in function 'train'
This appears to be where it is setting the start of the batch range. A little stuck on what may be the cause. Could it have to do with changing the batch_size when resuming training from a checkpoint?