Issue during Sync

[tadgh]

Traceback (most recent call last):
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/celery/app/trace.py", line 374, in trace_task
    R = retval = fun(*args, **kwargs)
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/celery/app/trace.py", line 629, in __protected_call__
    return self.run(*args, **kwargs)
  File "/opt/venvs/KaniWaniEnv/releases/1520628929/kw_webapp/tasks.py", line 265, in sync_with_wk
    new_review_count, new_synonym_count = sync_unlocked_vocab_with_wk(user)
  File "/opt/venvs/KaniWaniEnv/releases/1520628929/kw_webapp/tasks.py", line 485, in sync_unlocked_vocab_with_wk
    current_page_review_count, current_page_synonym_count = process_vocabulary_response_for_user(user, response)
  File "/opt/venvs/KaniWaniEnv/releases/1520628929/kw_webapp/tasks.py", line 459, in process_vocabulary_response_for_user
    new_review, synonyms_added_count = associate_synonyms_to_vocab(user, vocabulary, vocabulary_json['user_specific'])
  File "/opt/venvs/KaniWaniEnv/releases/1520628929/kw_webapp/tasks.py", line 342, in associate_synonyms_to_vocab
    review = UserSpecific.objects.get(user=user, vocabulary=vocab)
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/django/db/models/manager.py", line 85, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/django/db/models/query.py", line 371, in get
    clone = self.filter(*args, **kwargs)
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/django/db/models/query.py", line 784, in filter
    return self._filter_or_exclude(False, *args, **kwargs)
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/django/db/models/query.py", line 802, in _filter_or_exclude
    clone.query.add_q(Q(*args, **kwargs))
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/django/db/models/sql/query.py", line 1250, in add_q
    clause, _ = self._add_q(q_object, self.used_aliases)
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/django/db/models/sql/query.py", line 1276, in _add_q
    allow_joins=allow_joins, split_subq=split_subq,
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/django/db/models/sql/query.py", line 1206, in build_filter
    condition = lookup_class(lhs, value)
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/django/db/models/lookups.py", line 24, in __init__
    self.rhs = self.get_prep_lookup()
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/django/db/models/fields/related_lookups.py", line 112, in get_prep_lookup
    self.rhs = target_field.get_prep_value(self.rhs)
  File "/opt/venvs/KaniWaniEnv/lib/python3.4/site-packages/django/db/models/fields/__init__.py", line 966, in get_prep_value
    return int(value)