命令：hub run deepvoice3_ljspeech --input_text='Simple as this proposition is, it is necessary to be stated'

报错：

Traceback (most recent call last):
File "/usr/local/python3.7.0/bin/hub", line 8, in
sys.exit(execute())
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/commands/utils.py", line 78, in execute
status = 0 if com['_entry']().execute(sys.argv[idx:]) else 1
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/commands/serving.py", line 352, in execute
self.start_serving()
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/commands/serving.py", line 245, in start_serving
self.start_single_app_with_args()
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/commands/serving.py", line 221, in start_single_app_with_args
self.preinstall_modules()
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/commands/serving.py", line 152, in preinstall_modules
m = hub.Module(**init_args)
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/module/module.py", line 395, in __new__
**kwargs)
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/module/module.py", line 493, in init_with_name
ignore_env_mismatch=ignore_env_mismatch)
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/module/manager.py", line 190, in install
return self._install_from_name(name, version, ignore_env_mismatch)
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/module/manager.py", line 265, in _install_from_name
return self._install_from_url(item['url'])
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/module/manager.py", line 258, in _install_from_url
return self._install_from_archive(file)
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/module/manager.py", line 380, in _install_from_archive
return self._install_from_directory(directory)
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/module/manager.py", line 364, in _install_from_directory
hub_module_cls = HubModule.load(self._get_normalized_path(module_info.name))
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/module/module.py", line 418, in load
py_module = utils.load_py_module(dirname, '{}.module'.format(basename))
File "/usr/local/python3.7.0/lib/python3.7/site-packages/paddlehub/utils/utils.py", line 248, in load_py_module
py_module = importlib.import_module(py_module_name)
File "/usr/local/python3.7.0/lib/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1006, in _gcd_import
File "", line 983, in _find_and_load
File "", line 967, in _find_and_load_unlocked
File "", line 677, in _load_unlocked
File "", line 728, in exec_module
File "", line 219, in _call_with_frames_removed
File "/root/.paddlehub/modules/deepvoice3_ljspeech/module.py", line 59, in
from parakeet.utils import io
ImportError: cannot import name 'io' from 'parakeet.utils' (/usr/local/python3.7.0/lib/python3.7/site-packages/parakeet/utils/__init__.py)