TypeError: make_src() takes 2 positional arguments but 3 were given

[jasscia18]

paraphrases = self.ps.generate_paraphrases(instance_for_onmt, topk=topk+1, edit_distance_cutoff=4, threshold=threshold)
File "/home/scan/DVSI/sscc/paraphrase_scorer.py", line 799, in generate_paraphrases
translation, mapping = choose_forward_translation(sentence, to, back, n=5)
File "/home/scan/DVSI/sscc/paraphrase_scorer.py", line 30, in choose_forward_translation
translations = to_translator.translate([sentence], n_best=n, return_from_mapping=True)[0]
File "/home/scan/DVSI/sscc/onmt_model.py", line 179, in translate
for batch in testData:
File "/usr/local/lib/python3.6/site-packages/torchtext/data/iterator.py", line 151, in iter
self.train)
File "/usr/local/lib/python3.6/site-packages/torchtext/data/batch.py", line 27, in init
setattr(self, name, field.process(batch, device=device, train=train))
File "/usr/local/lib/python3.6/site-packages/torchtext/data/field.py", line 188, in process
tensor = self.numericalize(padded, device=device, train=train)
File "/usr/local/lib/python3.6/site-packages/torchtext/data/field.py", line 308, in numericalize
arr = self.postprocessing(arr, None, train)
TypeError: make_src() takes 2 positional arguments but 3 were given

Do you know how to solve this problem？？？