Following the tutorial steps, I get this error every time I send a message:
“Exception occurred in one of response middleware handlers Traceback (most recent call last): File “/Users/teresa.salazar/.pyenv/versions/3.7.3/lib/python3.7/site-packages/sanic/app.py”, line 958, in handle_request request, response File “/Users/teresa.salazar/.pyenv/versions/3.7.3/lib/python3.7/site-packages/spf/framework.py”, line 579, in _run_response_middleware _response = await _response File “/Users/teresa.salazar/.pyenv/versions/3.7.3/lib/python3.7/site-packages/sanic_cors/extension.py”, line 266, in unapplied_cors_response_middleware set_cors_headers(req, resp, context, res_options) File “/Users/teresa.salazar/.pyenv/versions/3.7.3/lib/python3.7/site-packages/sanic_cors/core.py”, line 251, in set_cors_headers headers_to_set = get_cors_headers(options, req.headers, req.method) File “/Users/teresa.salazar/.pyenv/versions/3.7.3/lib/python3.7/site-packages/sanic_cors/core.py”, line 171, in get_cors_headers origins_to_set = get_cors_origins(options, request_headers.get(‘Origin’)) File “/Users/teresa.salazar/.pyenv/versions/3.7.3/lib/python3.7/site-packages/sanic_cors/core.py”, line 146, in get_cors_origins return sorted([o for o in origins if not probably_regex(o)]) File “/Users/teresa.salazar/.pyenv/versions/3.7.3/lib/python3.7/site-packages/sanic_cors/core.py”, line 146, in return sorted([o for o in origins if not probably_regex(o)]) File “/Users/teresa.salazar/.pyenv/versions/3.7.3/lib/python3.7/site-packages/sanic_cors/core.py”, line 275, in probably_regex return any((c in maybe_regex for c in common_regex_chars)) File “/Users/teresa.salazar/.pyenv/versions/3.7.3/lib/python3.7/site-packages/sanic_cors/core.py”, line 275, in return any((c in maybe_regex for c in common_regex_chars)) TypeError: argument of type ‘NoneType’ is not iterable”
What should I do?