[ERROR][29-Jun-2017 09:06:12][PID:29476][/home/kanx/.virtualenvs/genymobile-cosu/lib/python3.5/site-packages/django/core/handlers/base.py:284]: Internal Server Error: /en/project/4df5a01e-ccb2-4c58-b76f-c49ea3e488f8/chunked_upload
Traceback (most recent call last):
  File "/home/kanx/.virtualenvs/genymobile-cosu/lib/python3.5/site-packages/django/core/handlers/base.py", line 149, in get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/kanx/.virtualenvs/genymobile-cosu/lib/python3.5/site-packages/django/core/handlers/base.py", line 147, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/kanx/.virtualenvs/genymobile-cosu/lib/python3.5/site-packages/django/views/generic/base.py", line 68, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/kanx/.virtualenvs/genymobile-cosu/lib/python3.5/site-packages/django/views/generic/base.py", line 88, in dispatch
    return handler(request, *args, **kwargs)
  File "/home/kanx/.virtualenvs/genymobile-cosu/lib/python3.5/site-packages/chunked_upload/views.py", line 93, in post
    return self._post(request, *args, **kwargs)
  File "/home/kanx/.virtualenvs/genymobile-cosu/lib/python3.5/site-packages/chunked_upload/views.py", line 218, in _post
    chunked_upload.append_chunk(chunk, chunk_size=chunk_size, save=False)
  File "/home/kanx/.virtualenvs/genymobile-cosu/lib/python3.5/site-packages/chunked_upload/models.py", line 69, in append_chunk
    self.file.write(chunk.read())
io.UnsupportedOperation: write