Issue and uncaught exception when encountering an SSLError

[samnissen]

----------------------------------------
172.17.0.1 - - [11/Sep/2018 19:39:25] "GET /https://blog.rakutenmarketing.com/wp-content/uploads/2018/08/Holiday-Shopper_Feature-Image.png HTTP/1.1" 200 -
https://blog.rakutenmarketing.com/wp-content/uploads/2018/08/Holiday-Shopper_Feature-Image.png
ERROR:root:ok
Traceback (most recent call last):
  File "server.py", line 19, in do_GET
    message = classify_nsfw.get_score(self.path[1:])
  File "/workspace/classify_nsfw.py", line 128, in get_score
    with c.request('GET', url, preload_content=False) as resp, open(tmp_filename, 'wb') as out_file:
  File "/usr/lib/python2.7/dist-packages/urllib3/request.py", line 75, in request
    **urlopen_kw)
  File "/usr/lib/python2.7/dist-packages/urllib3/request.py", line 88, in request_encode_url
    return self.urlopen(method, url, **urlopen_kw)
  File "/usr/lib/python2.7/dist-packages/urllib3/poolmanager.py", line 155, in urlopen
    response = conn.urlopen(method, u.request_uri, **kw)
  File "/usr/lib/python2.7/dist-packages/urllib3/connectionpool.py", line 599, in urlopen
    raise SSLError(e)
SSLError: hostname 'blog.rakutenmarketing.com' doesn't match 'blog.marketing.rakuten.co.uk'
----------------------------------------
Exception happened during processing of request from ('172.17.0.1', 38900)
Traceback (most recent call last):
  File "/usr/lib/python2.7/SocketServer.py", line 295, in _handle_request_noblock
    self.process_request(request, client_address)
  File "/usr/lib/python2.7/SocketServer.py", line 321, in process_request
    self.finish_request(request, client_address)
  File "/usr/lib/python2.7/SocketServer.py", line 334, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib/python2.7/SocketServer.py", line 649, in __init__
    self.handle()
  File "/usr/lib/python2.7/BaseHTTPServer.py", line 340, in handle
    self.handle_one_request()
  File "/usr/lib/python2.7/BaseHTTPServer.py", line 328, in handle_one_request
    method()
  File "server.py", line 22, in do_GET
    message = "exception: " + e.message
TypeError: cannot concatenate 'str' and 'CertificateError' objects

If I pass in any image from blog.rakutenmarketing.com, I get this error. My preferred outcome would be to ignore the SSL error altogether, like browsers seem to. However, regardless of that, there's the concatenation error on line 22.