Seq2SeqTrainer: enabled must be a bool (got NoneType)

Hi @sanchit-gandhi, sorry to bother you again, but I started fine-tuning on a new dataset, followed everything just like before, but run into a trainer issue and don’t know what to do:

RuntimeError: The size of tensor a (462) must match the size of tensor b (448) at non-singleton dimension 1

I opened a new post here.

I’d appreciate it a lot if you could help me look a bit. Thanks!