<code>
Traceback (most recent call last):
File "C:\Program Files\Google\google_appengine\google\appengine\ext\webapp\__init__.py", line 511, in __call__
handler.get(*groups)
File "D:\GAE\v2ex\v2ex\writer.py", line 130, in get
if CheckAuth(self) is False:
File "D:\GAE\v2ex\v2ex\v2ex\picky\security\__init__.py", line 14, in CheckAuth
if str(auth) != hashlib.sha1(SECRET + ':' + site_domain).hexdigest():
TypeError: cannot concatenate 'str' and 'NoneType' objects
</code>