Missing symbol under tox in openssl stuff

[Willem Jan Withagen]

Hi,

I'm the first to acknowledge that I do not know enough of python.
But still I can get by most of the times.

However during the tests of my Ceph port one of the tests complains:
==============

orchestrator/_interface.py:701: ImportError
------------------------------ Captured log call -------------------------------
ERROR    orchestrator._interface:_interface.py:391 _Promise failed
Traceback (most recent call last):
   File "/home/jenkins/workspace/ceph-master/src/pybind/mgr/cephadm/module.py", line 334, in do_work
     res = self._on_complete_(*args, **kwargs)
   File "/home/jenkins/workspace/ceph-master/src/pybind/mgr/cephadm/module.py", line 398, in call_self
     return f(self, *inner_args)
   File "/home/jenkins/workspace/ceph-master/src/pybind/mgr/cephadm/module.py", line 2352, in _create_grafana
     return self._create_daemon('grafana', daemon_id, host)
   File "/home/jenkins/workspace/ceph-master/src/pybind/mgr/cephadm/module.py", line 1874, in _create_daemon
     j = self._generate_grafana_config()
   File "/home/jenkins/workspace/ceph-master/src/pybind/mgr/cephadm/module.py", line 2288, in _generate_grafana_config
     cert, pkey = create_self_signed_cert('Ceph', 'cephadm')
   File "/home/jenkins/workspace/ceph-master/src/pybind/mgr/mgr_util.py", line 134, in create_self_signed_cert
     from OpenSSL import crypto
   File "/home/jenkins/workspace/ceph-master/src/pybind/mgr/.tox/py3/lib/python3.7/site-packages/OpenSSL/__init__.py", line 8, in <module>
     from OpenSSL import crypto, SSL
   File "/home/jenkins/workspace/ceph-master/src/pybind/mgr/.tox/py3/lib/python3.7/site-packages/OpenSSL/crypto.py", line 15, in <module>
     from OpenSSL._util import (
   File "/home/jenkins/workspace/ceph-master/src/pybind/mgr/.tox/py3/lib/python3.7/site-packages/OpenSSL/_util.py", line 6, in <module>
     from cryptography.hazmat.bindings.openssl.binding import Binding
   File "/home/jenkins/workspace/ceph-master/src/pybind/mgr/.tox/py3/lib/python3.7/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 15, in <module>
     from cryptography.hazmat.bindings._openssl import ffi, lib
ImportError: /home/jenkins/workspace/ceph-master/src/pybind/mgr/.tox/py3/lib/python3.7/site-packages/cryptography/hazmat/bindings/_openssl.abi3.so: Undefined symbol "SSLv3_client_method"

==============

And I have no idea how and why this complaint is here.
If I check with openssl it seems that this version should be available 
in version 1.1.1,d that is installed.
And all packages are up to date.

Who is the casue of the error here?
And how do I debug this....

--WjW