[Bug] AttributeError: 'Word2Vec' object has no attribute 'syn1'

[zhanghao-py]

File "/home/zhanghao10/.jumbo/lib/python2.7/threading.py", line 504, in run
self.__target(_self.__args, *_self.__kwargs)
File "/home/zhanghao10/sentence2vec-master/word2vec.py", line 855, in worker_train
for sent_no, sentence in job)
File "/home/zhanghao10/sentence2vec-master/word2vec.py", line 855, in
for sent_no, sentence in job)
File "/home/zhanghao10/sentence2vec-master/word2vec.py", line 985, in train_sent_vec_sg
l2a = deepcopy(model.syn1[word2.point]) # 2d matrix, codelen x layer1_size
AttributeError: 'Word2Vec' object has no attribute 'syn1'

the Word2Vec model has attribute 'syn1', please check!