MemcachedKeyCharacterError

gistfile1.txt

Traceback (most recent call last):
  File "D:\Django\bufnita\lib\site-packages\django\core\handlers\exception.py", line 42, in inner
    response = get_response(request)
  File "D:\Django\bufnita\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "D:\Django\bufnita\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "D:\Django\bufnita\lib\site-packages\django\views\generic\base.py", line 68, in view
    return self.dispatch(request, *args, **kwargs)
  File "D:\Django\bufnita\lib\site-packages\django\views\generic\base.py", line 88, in dispatch
    return handler(request, *args, **kwargs)
  File "D:\Django\bufnita\lib\site-packages\django\views\generic\list.py", line 174, in get
    context = self.get_context_data()
  File "D:\Django\bufnita\lib\site-packages\django\views\generic\list.py", line 131, in get_context_data
    page_size = self.get_paginate_by(queryset)
  File "D:\Django\bufnita\lib\site-packages\memoize\__init__.py", line 342, in decorated_function
    f, *args, **kwargs
  File "D:\Django\bufnita\lib\site-packages\memoize\__init__.py", line 192, in make_cache_key
    timeout=_timeout)
  File "D:\Django\bufnita\lib\site-packages\memoize\__init__.py", line 160, in _memoize_version
    version_data_list = self.get_many(*fetch_keys)
  File "D:\Django\bufnita\lib\site-packages\memoize\__init__.py", line 121, in get_many
    d = self.cache.get_many(keys=keys)
  File "D:\Django\bufnita\lib\site-packages\django\core\cache\backends\memcached.py", line 93, in get_many
    ret = self._cache.get_multi(new_keys)
  File "D:\Django\bufnita\lib\site-packages\memcache.py", line 1196, in get_multi
    keys, key_prefix)
  File "D:\Django\bufnita\lib\site-packages\memcache.py", line 832, in _map_and_prefix_keys
    self.check_key(bytes_orig_key, key_extra_len=key_extra_len)
  File "D:\Django\bufnita\lib\site-packages\memcache.py", line 1330, in check_key
    "Control/space characters not allowed (key=%r)" % key)
MemcachedKeyCharacterError: Control/space characters not allowed (key=':1:blog.views.BlogView.get_paginate_by.<blog.views.BlogView object at 0x03518AD0>_memver')