error when parsing with HEAD

[Sanqiang]

Traceback (most recent call last): File "/Users/zhaosanqiang916/git/Generate-Parallel-Data-for-Sentence-Compression-master/python/test.py", line 74, in <module> reduce_sentence(sample) File "/Users/zhaosanqiang916/git/Generate-Parallel-Data-for-Sentence-Compression-master/python/test.py", line 24, in reduce_sentence sentence_reduction.transfer_tree() File "/Users/zhaosanqiang916/git/Generate-Parallel-Data-for-Sentence-Compression-master/python/parallel_data_gen.py", line 417, in transfer_tree self.transfered_tree.consistency() File "/Users/zhaosanqiang916/git/Generate-Parallel-Data-for-Sentence-Compression-master/python/parallel_data_gen.py", line 217, in consistency assert len(self.all_roots()) == 1 AssertionError

Is there something wrong with this line of code?
I am using spacy 1.1.0 & latest one and python 2.7.

[sibredcat]

Hi Sanqiang!
Were you able to solve this issue? I got the same error.