<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>