Hi,

a user reported this issue with python3 for the CMB module:

Traceback (most recent call last):
  File "/home/user/app/node_modules/kresus/build/server/weboob/main.py", line 672, in fetch
    results['values'] = self.get_accounts()
  File "/home/user/app/node_modules/kresus/build/server/weboob/main.py", line 531, in get_accounts
    for account in list(self.backend.iter_accounts()):
  File "/home/user/data/weboob-data/modules/1.6/cmso/module.py", line 61, in iter_accounts
    return self.browser.iter_accounts()
  File "/home/user/data/weboob-data/modules/1.6/cmso/par/browser.py", line 60, in wrapper
    ret = cb()
  File "/home/user/data/weboob-data/modules/1.6/cmso/par/browser.py", line 56, in <lambda>
    cb = lambda: func(browser, *args, **kwargs)
  File "/weboob/weboob/browser/browsers.py", line 820, in inner
    return func(browser, *args, **kwargs)
  File "/home/user/data/weboob-data/modules/1.6/cmso/par/browser.py", line 188, in iter_accounts
    for a in page.iter_savings(key=key, numbers=numbers, name=owner_name):
  File "/weboob/weboob/browser/elements.py", line 211, in __iter__
    for obj in item:
  File "/weboob/weboob/browser/elements.py", line 211, in __iter__
    for obj in item:
  File "/weboob/weboob/browser/elements.py", line 354, in __iter__
    self.handle_attr(attr, getattr(self, 'obj_%s' % attr))
  File "/weboob/weboob/browser/elements.py", line 371, in handle_attr
    value = self.use_selector(func, key=key)
  File "/weboob/weboob/browser/elements.py", line 131, in use_selector
    value = func()
  File "/home/user/data/weboob-data/modules/1.6/cmso/par/pages.py", line 209, in obj_id
    number = self.get_market_number()
  File "/home/user/data/weboob-data/modules/1.6/cmso/par/pages.py", line 237, in get_market_number
    page = self.page.browser._go_market_history()
  File "/home/user/data/weboob-data/modules/1.6/cmso/par/browser.py", line 222, in _go_market_history
    self.location(json.loads(content)['urlSSO'])
  File "/usr/lib/python3.5/json/__init__.py", line 312, in loads
    s.__class__.__name__))
TypeError: the JSON object must be str, not 'bytes'