Error: IsADirectoryError on init command #41

Traceback (most recent call last):
  File "/Users/cristian.oliveira/.virtualenv/test/bin/lambda", line 53, in <module>
    cli()
  File "/Users/cristian.oliveira/.virtualenv/test/lib/python3.6/site-packages/click/core.py", line 716, in __call__
    return self.main(*args, **kwargs)
  File "/Users/cristian.oliveira/.virtualenv/test/lib/python3.6/site-packages/click/core.py", line 696, in main
    rv = self.invoke(ctx)
  File "/Users/cristian.oliveira/.virtualenv/test/lib/python3.6/site-packages/click/core.py", line 1060, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/cristian.oliveira/.virtualenv/test/lib/python3.6/site-packages/click/core.py", line 889, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/cristian.oliveira/.virtualenv/test/lib/python3.6/site-packages/click/core.py", line 534, in invoke
    return callback(*args, **kwargs)
  File "/Users/cristian.oliveira/.virtualenv/test/bin/lambda", line 20, in init
    aws_lambda.init(CURRENT_DIR)
  File "/Users/cristian.oliveira/.virtualenv/test/lib/python3.6/site-packages/aws_lambda/aws_lambda.py", line 149, in init
    copy(dest_path, src)
  File "/Users/cristian.oliveira/.virtualenv/test/lib/python3.6/shutil.py", line 243, in copy
    copyfile(src, dst, follow_symlinks=follow_symlinks)
  File "/Users/cristian.oliveira/.virtualenv/test/lib/python3.6/shutil.py", line 122, in copyfile
    with open(src, 'rb') as fsrc:
IsADirectoryError: [Errno 21] Is a directory: '/Users/cristian.oliveira/.virtualenv/test/lib/python3.6/site-packages/aws_lambda/project_templates/__pycache__'