Error in handling request

[vickysy84]

Hi,

I tried to deploy this but I got the following error:

2018-12-06T14:05:41.401401+00:00 app[web.1]: [2018-12-06 14:05:41 +0000] [10] [ERROR] Error handling request /wechat
2018-12-06T14:05:41.401404+00:00 app[web.1]: Traceback (most recent call last):
2018-12-06T14:05:41.401406+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 135, in handle
2018-12-06T14:05:41.401407+00:00 app[web.1]: self.handle_request(listener, req, client, addr)
2018-12-06T14:05:41.401409+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 176, in handle_request
2018-12-06T14:05:41.401411+00:00 app[web.1]: respiter = self.wsgi(environ, resp.start_response)
2018-12-06T14:05:41.401413+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/falcon/api.py", line 209, in __call__
2018-12-06T14:05:41.401415+00:00 app[web.1]: responder(req, resp, **params)
2018-12-06T14:05:41.401417+00:00 app[web.1]: File "/app/src/lib/wechat/wechatapiresource.py", line 26, in on_get
2018-12-06T14:05:41.401418+00:00 app[web.1]: verification_elements.sort()
2018-12-06T14:05:41.401459+00:00 app[web.1]: TypeError: '<' not supported between instances of 'NoneType' and 'str'
2018-12-06T14:05:41.405870+00:00 app[web.1]: 10.33.161.198 - - [06/Dec/2018:14:05:41 +0000] "GET /wechat HTTP/1.1" 500 - "-" "-"

Did I miss anything? Thanks!

[edonosotti]

It looks like verification_elements.sort() is yelding an error because one element in the list is NoneType instead of a str. Have you set the WECHAT_TOKEN environment variable in the app settings?