Traceback (most recent call last):

File "/opt/python/domains/atlassian.com/answers/lib/python2.6/site-packages/django/core/handlers/base.py", line 100, in get_response
response = callback(request, *callback_args, **callback_kwargs)

File "/opt/python/domains/atlassian.com/answers/ADM-19711/forum/views/auth.py", line 96, in prepare_provider_signin
return process_provider_signin(request, provider)

File "/opt/python/domains/atlassian.com/answers/ADM-19711/forum/views/auth.py", line 110, in process_provider_signin
assoc_key = provider_class.process_authentication_request(request)

File "/opt/python/domains/atlassian.com/answers/ADM-19711/forum_modules/atlassianauth/authentication.py", line 38, in process_authentication_request
username=(request.POST['username'].strip()).lower()

File "/opt/python/domains/atlassian.com/answers/lib/python2.6/site-packages/django/utils/datastructures.py", line 235, in _getitem_
raise MultiValueDictKeyError("Key %r not found in %r" % (key, self))

MultiValueDictKeyError: "Key 'username' not found in <QueryDict: {}>"

<WSGIRequest
GET:<QueryDict: {}>,
POST:<QueryDict: {}>,
COOKIES:{},
META:

{'CONTENT_LENGTH': '', 'CONTENT_TYPE': '', 'CSRF_COOKIE': 'f6b3cf32542ed21fbe8c69c0f0ca885e', 'HTTP_ACCEPT': 'application/x-shockwave-flash, image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*', 'HTTP_ACCEPT_ENCODING': 'gzip, deflate', 'HTTP_ACCEPT_LANGUAGE': 'zh-cn', 'HTTP_CONNECTION': 'close', 'HTTP_HOST': 'answers.atlassian.com', 'HTTP_REFERER': 'http://answers.atlassian.com/', 'HTTP_USER_AGENT': 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)', 'HTTP_X_FORWARDED_FOR': '222.186.189.160, 172.16.3.45', 'HTTP_X_REAL_IP': '222.186.189.160', 'PATH_INFO': u'/account/atlassian/signin/', 'QUERY_STRING': '', 'RAW_URI': '/account/atlassian/signin/', 'REMOTE_ADDR': '172.16.3.45', 'REMOTE_PORT': '80', 'REQUEST_METHOD': 'GET', 'SCRIPT_NAME': u'', 'SERVER_NAME': 'answers.atlassian.com', 'SERVER_PORT': '80', 'SERVER_PROTOCOL': 'HTTP/1.0', 'SERVER_SOFTWARE': 'gunicorn/0.12.0', 'gunicorn.socket': <socket._socketobject object at 0x117e5b40>, 'wsgi.errors': <open file '<stderr>', mode 'w' at 0x2b6e282311e0>, 'wsgi.input': <gunicorn.http.body.Body object at 0xd316bd0>, 'wsgi.multiprocess': True, 'wsgi.multithread': False, 'wsgi.run_once': False, 'wsgi.url_scheme': 'http', 'wsgi.version': (1, 0)}

>