Traceback (most recent call last):


 "/usr/lib/python2.7/dist-packages/salt/loader.py", line 1567, in _load_module

mod = imp.load_module(mod_namespace, fn_, fpath, desc)


 "/usr/lib/python2.7/dist-packages/salt/states/pkgrepo.py", line 93, in <module>

from salt.exceptions import CommandExecutionError, SaltInvocationError


 "/usr/lib/python2.7/dist-packages/salt/exceptions.py", line 9, in <module>

import logging


 "/usr/lib/python2.7/logging/__init__.py", line 26, in <module>

import sys, os, time, cStringIO, traceback, warnings, weakref, collections


 "/usr/lib/python2.7/os.py", line 119, in <module>

sys.modules['os.path'] = path
AttributeError: 'module' object has no attribute 'modules'

Traceback (most recent call last):


 "/Users/<user>/git/freqtrade/freqtrade/main.py", line 36, in main

return_code = args['func'](args)


 "/Users/<user>/git/freqtrade/freqtrade/commands/optimize_commands.py", line 48, in start_backtesting

backtesting = Backtesting(config)


 "/Users/<user>/git/freqtrade/freqtrade/optimize/backtesting.py", line 65, in __init__

self.exchange = ExchangeResolver.load_exchange(self.config['exchange']['name'], self.config)


 "/Users/<user>/git/freqtrade/freqtrade/resolvers/exchange_resolver.py", line 37, in load_exchange

exchange = Exchange(config, validate=validate)


 "/Users/<user>/git/freqtrade/freqtrade/exchange/exchange.py", line 122, in __init__

self.validate_stakecurrency(config['stake_currency'])


 "/Users/<user>/git/freqtrade/freqtrade/exchange/exchange.py", line 296, in validate_stakecurrency

quote_currencies = self.get_quote_currencies()


 "/Users/<user>/git/freqtrade/freqtrade/exchange/exchange.py", line 227, in get_quote_currencies

return sorted(set([x['quote'] for _, x in markets.items()]))
AttributeError: 'NoneType' object has no attribute 'items'
