Unhelpful traceback (`OpenSSL.SSL.Error`) when certificate problems arise

[nishant378]

Required logs

Traceback (most recent call last):
  File "/root/matrix-backend-repo/riot-matrix/synapse/synapse/http/[server.py](http://server.py/)", line 368, in _async_render_wrapper
    callback_return = await self._async_render(request)
  File "/root/matrix-backend-repo/riot-matrix/synapse/synapse/http/[server.py](http://server.py/)", line 574, in _async_render
    callback_return = await raw_callback_return
  File "/root/matrix-backend-repo/riot-matrix/synapse/synapse/rest/client/[login.py](http://login.py/)", line 653, in on_POST
    body = await self._http_client.post_raw(uri, args)
  File "/root/matrix-backend-repo/riot-matrix/synapse/synapse/http/[client.py](http://client.py/)", line 499, in post_raw
    response = await self.request(
  File "/root/matrix-backend-repo/riot-matrix/synapse/synapse/http/[client.py](http://client.py/)", line 444, in request
    response = await make_deferred_yieldable(request_deferred)
twisted.web._newclient.RequestTransmissionFailed: [<twisted.python.failure.Failure OpenSSL.SSL.Error: [('STORE routines', '', 'unregistered scheme'), ('system library', '', ''), ('STORE routines', '', 'unregistered scheme'), ('system library', '', ''), ('SSL routines', '', 'certificate verify failed')]>]

[DMRobertson]

certificate verify failed

I would guess that either there is something wrong with your certificates, or else you Synapse cannot see your certificates.

In the future, please:

• Ask in the Synapse Admins room for support requests. If your homeserver is inoperable at the moment, you can sign up for an account on the Matrix.org homeserver in order to reach the support room.
• If you believe you have found a bug, use the bug report template to report it.

I suggest we leave this open as an enhancement request to have a user-friendly certificate check on startup.