Issue in bigartm worker

log

Jul 12 02:02:41 bigdata-dmp-testing python[16583]: Exception in thread Thread-1:
Jul 12 02:02:41 bigdata-dmp-testing python[16583]: Traceback (most recent call last):
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:   File "/usr/lib/python3.5/threading.py", line 914, in _bootstrap_inner
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:     self.run()
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:   File "/usr/lib/python3.5/threading.py", line 862, in run
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:     self._target(*self._args, **self._kwargs)
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:   File "/usr/lib/python3.5/multiprocessing/pool.py", line 119, in worker
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:     result = (True, func(*args, **kwds))
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:   File "/usr/local/lib/python3.5/dist-packages/bigartm-0.8.3-py3.5.egg/artm/master_component.py", line 865, in transform
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:     theta_matrix_info = self._lib.ArtmRequestTransformMasterModelExternal(self.master_id, args)
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:   File "/usr/local/lib/python3.5/dist-packages/bigartm-0.8.3-py3.5.egg/artm/wrapper/api.py", line 148, in artm_api_call
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:     self._check_error(result)
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:   File "/usr/local/lib/python3.5/dist-packages/bigartm-0.8.3-py3.5.egg/artm/wrapper/api.py", line 84, in _check_error
Jul 12 02:02:41 bigdata-dmp-testing python[16583]:     raise exception_class(error_message)
Jul 12 02:02:41 bigdata-dmp-testing python[16583]: artm.wrapper.exceptions.InvalidOperationException: Transform: no tokens in effect --- either tokens not present in the model, or tokens were ignored due to class_id