运行代码lcsts_vest.py遇到错误？

[ArvinShaffer]

用的theano版本是0.9，我先运行代码lcsts_dataset.py生成数据lcsts_data-word-full.pkl，然后运行代码lcsts_vest，遇到如下错误。
ERROR (theano.gof.opt): SeqOptimizer apply <theano.scan_module.scan_opt.PushOutScanOutput object at 0x7fd1213343d0>
ERROR (theano.gof.opt): Traceback:
ERROR (theano.gof.opt): Traceback (most recent call last):
File "/home/wry/anaconda3/envs/copynet27/lib/python2.7/site-packages/theano/gof/opt.py", line 235, in apply
sub_prof = optimizer.optimize(fgraph)