TypeError: __init__() takes 1 positional argument but 2 were given

[rosefun]

Traceback (most recent call last):
  File "E:\Anaconda3\lib\site-packages\aiohttp\web_protocol.py", line 410, in st
art
    resp = yield from self._request_handler(request)
  File "E:\Anaconda3\lib\site-packages\aiohttp\web.py", line 325, in _handle
    resp = yield from handler(request)
  File "E:\Anaconda3\lib\site-packages\aiohttp\web_middlewares.py", line 93, in
impl
    return (yield from handler(request))
  File "app.py", line 61, in logger
    return (yield from handler(request))
  File "app.py", line 100, in auth
    return (yield from handler(request))
  File "app.py", line 120, in response
    r = yield from handler(request)
  File "E:\Anaconda3\lib\site-packages\aiohttp\web_urldispatcher.py", line 142,
in handler_wrapper
    result = yield from result
  File "G:\0pythonstudy\chengxu\webAPP python廖雪峰\PureBlog-master\www\web_fram
e.py", line 200, in __call__
    return web.HTTPBadRequest('Missing argument: %s' % name)
TypeError: __init__() takes 1 positional argument but 2 were given

这是什么情况，求赐教！