Pb with plague

[Tanguy Eric]

I just tried to launch a new build using make plague after using make
tag without any problem and i obtain this error : 
$ make plague
/usr/bin/plague-client build gperiodic gperiodic-2_0_8-5_fc7 devel
Traceback (most recent call last):
  File "/usr/bin/plague-client", line 420, in ?
    cli = PlagueClient(os.path.expanduser(cfg_file))
  File "/usr/bin/plague-client", line 85, in __init__
    self._check_api_version(self._server)
  File "/usr/bin/plague-client", line 90, in _check_api_version
    server_ver = server.api_version()
  File "/usr/lib/python2.4/xmlrpclib.py", line 1096, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib/python2.4/xmlrpclib.py", line 1383, in __request
    verbose=self.__verbose
  File "/usr/lib/python2.4/xmlrpclib.py", line 1129, in request
    self.send_content(h, request_body)
  File "/usr/lib/python2.4/xmlrpclib.py", line 1243, in send_content
    connection.endheaders()
  File "/usr/lib/python2.4/httplib.py", line 798, in endheaders
    self._send_output()
  File "/usr/lib/python2.4/httplib.py", line 679, in _send_output
    self.send(msg)
  File "/usr/lib/python2.4/httplib.py", line 658, in send
    self.sock.sendall(str)
  File "/usr/lib/python2.4/site-packages/plague/SSLConnection.py", line
110, in sendall
    sent = con.send(data, flags)
OpenSSL.SSL.Error: [('SSL routines', 'SSL3_READ_BYTES', 'sslv3 alert
certificate expired'), ('SSL routines', 'SSL3_WRITE_BYTES', 'ssl
handshake failure')]
make: *** [plague] Erreur 1

Someone could explain me what is the problem ?

Thanks

Eric