[Django] ERROR (EXTERNAL IP): Internal Server Error: /api/submissions/events/pre_created/

[huanghao]

Traceback (most recent call last):

File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py", line 114, in get_response
response = wrapped_callback(request, _callback_args, *_callback_kwargs)

File "/usr/lib/python2.7/site-packages/django/views/generic/base.py", line 69, in view
return self.dispatch(request, _args, *_kwargs)

File "/usr/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 57, in wrapped_view
return view_func(_args, *_kwargs)

File "/usr/lib/python2.7/site-packages/rest_framework/views.py", line 399, in dispatch
response = self.handle_exception(exc)

File "/usr/lib/python2.7/site-packages/rest_framework/views.py", line 387, in dispatch
self.initial(request, _args, *_kwargs)

File "/usr/lib/python2.7/site-packages/rest_framework/views.py", line 316, in initial
self.perform_authentication(request)

File "/usr/lib/python2.7/site-packages/rest_framework/views.py", line 266, in perform_authentication
request.user

File "/usr/lib/python2.7/site-packages/rest_framework/request.py", line 219, in user
self._authenticate()

File "/usr/lib/python2.7/site-packages/rest_framework/request.py", line 377, in _authenticate
user_auth_tuple = authenticator.authenticate(self)

File "/usr/lib/python2.7/site-packages/rest_framework/authentication.py", line 119, in authenticate
self.enforce_csrf(request)

File "/usr/lib/python2.7/site-packages/rest_framework/authentication.py", line 128, in enforce_csrf
reason = CSRFCheck().process_view(request, None, (), {})

File "/usr/lib/python2.7/site-packages/django/middleware/csrf.py", line 170, in process_view
request_csrf_token = request.POST.get('csrfmiddlewaretoken', '')

File "/usr/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 146, in _get_post
self._load_post_and_files()

File "/usr/lib/python2.7/site-packages/django/http/request.py", line 231, in _load_post_and_files
self._post, self._files = QueryDict(self.body, encoding=self._encoding), MultiValueDict()

File "/usr/lib/python2.7/site-packages/django/http/request.py", line 194, in body
six.reraise(UnreadablePostError, UnreadablePostError(*e.args), sys.exc_info()[2])

File "/usr/lib/python2.7/site-packages/django/http/request.py", line 192, in body
self._body = self.read()

File "/usr/lib/python2.7/site-packages/django/http/request.py", line 248, in read
six.reraise(UnreadablePostError, UnreadablePostError(*e.args), sys.exc_info()[2])

File "/usr/lib/python2.7/site-packages/django/http/request.py", line 246, in read
return self._stream.read(_args, *_kwargs)

File "/usr/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 45, in read
result = self.buffer + self._read_limited()

File "/usr/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 39, in _read_limited
result = self.stream.read(size)

UnreadablePostError: request data read error