An exception occurred when running GooglePlugin

[everping]

Domain: zomato.com
Command: substack -d zomato.com
Exception:

[ERROR] 2017-03-31 14:38:17,947  Error occurred with plugin GooglePlugin
Traceback (most recent call last):
  File "D:\Everping\Work\Projects\substack\substack\plugins\sub_domain_plugin.py", line 57, in discover
    pool.map(self.worker, _dict)
  File "C:\Python27\lib\multiprocessing\pool.py", line 251, in map
    return self.map_async(func, iterable, chunksize).get()
  File "C:\Python27\lib\multiprocessing\pool.py", line 567, in get
    raise self._value
IndexError: list index out of range
Traceback (most recent call last):
  File "D:\Everping\Work\Projects\substack\substack.py", line 47, in <module>
    main()
  File "D:\Everping\Work\Projects\substack\substack.py", line 43, in main
    sub_stack.start()
  File "D:\Everping\Work\Projects\substack\substack\substack_core.py", line 96, in start
    subs = self.sub()
  File "D:\Everping\Work\Projects\substack\substack\substack_core.py", line 65, in sub
    engine_result = plugin.discover(domain)
  File "D:\Everping\Work\Projects\substack\substack\plugins\sub_domain_plugin.py", line 64, in discover
    raise PluginException(msg)
substack.data.exceptions.PluginException: Error occurred with plugin GooglePlugin
Exception in thread Thread-4002 (most likely raised during interpreter shutdown):Exception in thread Thread-3998 (most likely raised during interpreter shutdown):Exception in thread Thread-3987 (most likely raised during interpreter shutdown):Exception in thread Thread-4006 (most likely raised during interpreter shutdown):Exception in thread Thread-4004 (most likely raised during interpreter shutdown):Exception in thread Thread-4005 (most likely raised during interpreter shutdown):Exception in thread Thread-4000 (most likely raised during interpreter shutdown):Exception in thread Thread-4001 (most likely raised during interpreter shutdown):