error trace

gistfile1.txt

[E 120915 12:47:46 web:1085] Uncaught exception GET /v1/videos/append?vids=XNDUwNTc4MDI0,XNDUwNTc3MTY4,XNDM2MTg1MDY4,XMzg5NTg4ODYw&size_set=4 (127.0.0.1)
    HTTPRequest(protocol='http', host='localhost:11535', method='GET', uri='/v1/videos/append?vids=XNDUwNTc4MDI0,XNDUwNTc3MTY4,XNDM2MTg1MDY4,XMzg5NTg4ODYw&size_set=4', version='HTTP/1.1', remote_ip='127.0.0.1', body='', headers={'Host': 'localhost:11535', 'User-Agent': 'Python-urllib/2.7', 'Connection': 'close', 'Accept-Encoding': 'identity'})
    Traceback (most recent call last):
      File "/opt/python2.7/lib/python2.7/site-packages/tornado-2.4-py2.7.egg/tornado/web.py", line 1021, in _stack_context_handle_exception
        raise_exc_info((type, value, traceback))
      File "/opt/python2.7/lib/python2.7/site-packages/tornado-2.4-py2.7.egg/tornado/web.py", line 1139, in wrapper
        return method(self, *args, **kwargs)
      File "/opt/paike/gof/modules/video/v1/video_info.py", line 133, in get
        self.async_send_request('video', context, 'video.append_info %s' % (vids), callbacks)
      File "/opt/paike/gof/gof/handlers.py", line 151, in async_send_request
        pool.wait_connection(on_connection_ready)
      File "/opt/paike/gof/gof/connectionpool.py", line 186, in wait_connection
        callback(conn)
      File "/opt/paike/gof/gof/handlers.py", line 150, in on_connection_ready
        connection.send_request(request, lambda data: self.on_spi_client_response(context, data, on_response))
      File "/opt/paike/gof/gof/connectionpool.py", line 67, in send_request
        self.stream.read_until('\n', connection_on_line_received(self.pool, self, callback))
      File "/opt/python2.7/lib/python2.7/site-packages/tornado-2.4-py2.7.egg/tornado/iostream.py", line 151, in read_until
        self._set_read_callback(callback)
      File "/opt/python2.7/lib/python2.7/site-packages/tornado-2.4-py2.7.egg/tornado/iostream.py", line 369, in _set_read_callback
        assert not self._read_callback, "Already reading"
    AssertionError: Already reading
ERROR: in write_error: traceback=
Traceback (most recent call last):
  File "/opt/paike/gof/gof/handlers.py", line 27, in write_error
    self.write(json.dumps(kwargs))
  File "/opt/python2.7/lib/python2.7/json/__init__.py", line 231, in dumps
    return _default_encoder.encode(obj)
  File "/opt/python2.7/lib/python2.7/json/encoder.py", line 201, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/opt/python2.7/lib/python2.7/json/encoder.py", line 264, in iterencode
    return _iterencode(o, 0)
  File "/opt/python2.7/lib/python2.7/json/encoder.py", line 178, in default
    raise TypeError(repr(o) + " is not JSON serializable")
TypeError: <type 'exceptions.AssertionError'> is not JSON serializable
ERROR: in write_error: kwargs={'exc_info': (<type 'exceptions.AssertionError'>, AssertionError('Already reading',), <traceback object at 0x13577b90>)}