Traceback (most recent call last):
  File "/home/ubuntu/Envs/env1/bin/lambda", line 67, in <module>
    cli()
  File "/home/ubuntu/Envs/env1/local/lib/python2.7/site-packages/click/core.py", line 716, in __call__
    return self.main(*args, **kwargs)
  File "/home/ubuntu/Envs/env1/local/lib/python2.7/site-packages/click/core.py", line 696, in main
    rv = self.invoke(ctx)
  File "/home/ubuntu/Envs/env1/local/lib/python2.7/site-packages/click/core.py", line 1060, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/ubuntu/Envs/env1/local/lib/python2.7/site-packages/click/core.py", line 889, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/ubuntu/Envs/env1/local/lib/python2.7/site-packages/click/core.py", line 534, in invoke
    return callback(*args, **kwargs)
  File "/home/ubuntu/Envs/env1/bin/lambda", line 40, in invoke
    aws_lambda.invoke(CURRENT_DIR, event_file, verbose)
  File "/home/ubuntu/Envs/env1/local/lib/python2.7/site-packages/aws_lambda/aws_lambda.py", line 147, in invoke
    for key, value in cfg.get('environment_variables').items():
AttributeError: 'NoneType' object has no attribute 'items'