Crash when trying to run demo mode

[marxsk]

I have tried to run demo as in the README (python3.7 & macos):

[2018-08-30 13:00:31] Languages: Slovak
[2018-08-30 13:00:31] Tracking IOS apps: 556540446
Traceback (most recent call last):
File "./usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/bin/critics", line 11, in
load_entry_point('critics', 'console_scripts', 'critics')()
File "/Users/marx/GIT/scraping/critics/critics/init.py", line 9, in main
return cli(auto_envvar_prefix=envvar_prefix)
File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/click-6.7-py3.7.egg/click/core.py", line 722, in call
return self.main(*args, **kwargs)
File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/click-6.7-py3.7.egg/click/core.py", line 697, in main
rv = self.invoke(ctx)
File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/click-6.7-py3.7.egg/click/core.py", line 895, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/click-6.7-py3.7.egg/click/core.py", line 535, in invoke
return callback(*args, **kwargs)
File "/Users/marx/GIT/scraping/critics/critics/commands.py", line 75, in cli
itunes.start()
File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado-5.1-py3.7-macosx-10.13-x86_64.egg/tornado/ioloop.py", line 1209, in start
self._schedule_next()
File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado-5.1-py3.7-macosx-10.13-x86_64.egg/tornado/ioloop.py", line 1237, in _schedule_next
self._update_next(self.io_loop.time())
File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/tornado-5.1-py3.7-macosx-10.13-x86_64.egg/tornado/ioloop.py", line 1244, in _update_next
callback_time_sec *= 1 + (self.jitter * (random.random() - 0.5))
TypeError: unsupported operand type(s) for *: 'AsyncIOMainLoop' and 'float'