在运行 Rasa（当有人告诉我他的名字时，我编写了一个简单的模型来识别他的名字并将名字存储在数据库中）时，每次运行它时都会遇到 Rasa 的 core.py 抛出的异常：
Bot loaded. Type a message and press enter (use '/stop' to exit):
Your input -> My name is Michael
Exception occurred in one of response middleware handlers
Traceback (most recent call last):
File "/Users/Kami/Documents/rasa/venv/lib/python3.7/site-packages/sanic/app.py", line 958, in handle_request
request, response
File "/Users/Kami/Documents/rasa/venv/lib/python3.7/site-packages/spf/framework.py", line 579, in _run_response_middleware
_response = await _response
File "/Users/Kami/Documents/rasa/venv/lib/python3.7/site-packages/sanic_cors/extension.py", line 267, in unapplied_cors_response_middleware
set_cors_headers(req, resp, context, res_options)
File "/Users/Kami/Documents/rasa/venv/lib/python3.7/site-packages/sanic_cors/core.py", line 254, in set_cors_headers
headers_to_set = get_cors_headers(options, req.headers, req.method)
File "/Users/Kami/Documents/rasa/venv/lib/python3.7/site-packages/sanic_cors/core.py", line 174, in get_cors_headers
origins_to_set = get_cors_origins(options, request_headers.get('Origin'))
File "/Users/Kami/Documents/rasa/venv/lib/python3.7/site-packages/sanic_cors/core.py", line 149, in get_cors_origins
return sorted([o for o in origins if not probably_regex(o)])
File "/Users/Kami/Documents/rasa/venv/lib/python3.7/site-packages/sanic_cors/core.py", line 149, in <listcomp>
return sorted([o for o in origins if not probably_regex(o)])
File "/Users/Kami/Documents/rasa/venv/lib/python3.7/site-packages/sanic_cors/core.py", line 273, in probably_regex
return any((c in maybe_regex for c in common_regex_chars))
File "/Users/Kami/Documents/rasa/venv/lib/python3.7/site-packages/sanic_cors/core.py", line 273, in <genexpr>
return any((c in maybe_regex for c in common_regex_chars))
TypeError: argument of type 'NoneType' is not iterable
我试过在调试中运行，但似乎没有消息与这个问题有关。有什么建议么？