InvalidCodepoint: Codepoint U+003A at position 6 of u'https:' not allowed

[NegativeMjark]

2017-01-11 16:32:13,852 - synapse.http.server - 139 - ERROR - POST-1355076 - Failed handle request synapse.http.server._async_render on <synapse.rest.ClientRestResource object at 0x4e7a790>: <XForwardedForRequest at 0x7fda45d8dc68 method=POST uri=/_matrix/client/r0/createRoTraceback (most recent call last):
  File "synapse/http/server.py", line 116, in wrapped_request_handler
    yield request_handler(self, request, request_metrics)
InvalidCodepoint: Codepoint U+003A at position 6 of u'https:' not allowed
2017-01-11 16:32:13,854 - synapse.access.http.8080 - 91 - INFO - POST-1355076 - 80.12.37.21 - 8080 - {@PokePingouin:matrix.org} Processed request: 725ms (9ms, 0ms) (188ms/20) 55B 500 "POST /_matrix/client/r0/createRoom?access_token=<redacted> HTTP/1.1" "Dalvik/2.1.0 (Linux;2

[richvdh]

whatever this meant, I think it's been fixed.