cannot create a pipeline between MongoDB and NEO4j

[grv1207]

after typing " mongo-connector -m localhost:27017 -t http://localhost:7474/db/data -d neo4j_doc_manager " I get following error,
Exception in thread Thread-2:
Traceback (most recent call last):
File "/Users/gauravvashisth/anaconda/lib/python3.5/threading.py", line 914, in _bootstrap_inner
self.run()
File "/Users/gauravvashisth/anaconda/lib/python3.5/site-packages/mongo_connector/util.py", line 104, in wrapped
func(*args, **kwargs)
File "/Users/gauravvashisth/anaconda/lib/python3.5/site-packages/mongo_connector/oplog_manager.py", line 267, in run
docman.upsert(doc, ns, timestamp)
File "/Users/gauravvashisth/anaconda/lib/python3.5/site-packages/mongo_connector/doc_managers/neo4j_doc_manager.py", line 66, in upsert
tx.commit()
File "/Users/gauravvashisth/anaconda/lib/python3.5/site-packages/py2neo/cypher/core.py", line 306, in commit
return self.post(self.__commit or self.__begin_commit)
File "/Users/gauravvashisth/anaconda/lib/python3.5/site-packages/py2neo/cypher/core.py", line 261, in post
raise self.error_class.hydrate(error)
File "/Users/gauravvashisth/anaconda/lib/python3.5/site-packages/py2neo/cypher/error/core.py", line 54, in hydrate
error_cls = getattr(error_module, title)
AttributeError: module 'py2neo.cypher.error.schema' has no attribute 'ConstraintValidationFailed'

I have installed py2neo 2.0.7

[n1t1nK]

i faced the same problem, you are violating some constraint for me it was uniqueness constraint.

[hhongwen]

i faced the same problem, too...
how did you solve the problem?