Traceback (most recent call last):
  File "/home/ec2-user/resources/python27/bin/airflow", line 28, in <module>
    args.func(args)
  File "/home/ec2-user/resources/python27/lib/python2.7/site-packages/airflow/bin/cli.py", line 874, in scheduler
    job.run()
  File "/home/ec2-user/resources/python27/lib/python2.7/site-packages/airflow/jobs.py", line 201, in run
    self._execute()
  File "/home/ec2-user/resources/python27/lib/python2.7/site-packages/airflow/jobs.py", line 1311, in _execute
    self._execute_helper(processor_manager)
  File "/home/ec2-user/resources/python27/lib/python2.7/site-packages/airflow/jobs.py", line 1401, in _execute_helper
    processor_manager.set_file_paths(known_file_paths)
  File "/home/ec2-user/resources/python27/lib/python2.7/site-packages/airflow/utils/dag_processing.py", line 446, in set_file_paths
    processor.stop()
AttributeError: 'DagFileProcessor' object has no attribute 'stop'