单机版python3.6.8语法错误

[manfredxue]

[root@station51 supervisor]# tail -n50 admin.log
Traceback (most recent call last):
File "/usr/local/lib64/python3.6/site-packages/tornado/web.py", line 1701, in _execute
result = method(*self.path_args, **self.path_kwargs)
File "/opt/codo/codo-admin/mg/handlers/login_handler.py", line 144, in post
self.set_cookie('auth_key', auth_key, expires_days=1)
File "/usr/local/lib64/python3.6/site-packages/tornado/web.py", line 622, in set_cookie
value = escape.native_str(value)
File "/usr/local/lib64/python3.6/site-packages/tornado/escape.py", line 226, in to_unicode
raise TypeError("Expected bytes, unicode, or None; got %r" % type(value))
TypeError: Expected bytes, unicode, or None; got <class 'AttributeError'>
500 POST /login/ (127.0.0.1) 17.57ms
404 GET /api/accounts/are_you_ok/ (127.0.0.1) 1.26ms
Uncaught exception POST /login/ (127.0.0.1)
HTTPServerRequest(protocol='http', host='codo-admin', method='POST', uri='/login/', version='HTTP/1.0', remote_ip='127.0.0.1')