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• OS: Debian GNU/Linux 10 (buster)
• GTK Version: 3.24.5
• PyGObject Version: 3.34.0
• GLib Version : 2.58.2
• python-nbxmpp Version: 0.9.94
• Gajim Version: 1.1.94+gajim@b3877221

Traceback

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/nbxmpp/tcp.py", line 135, in _on_connect_finished
    self._on_connected()
  File "/usr/lib/python3/dist-packages/nbxmpp/tcp.py", line 138, in _on_connected
    self.notify('connected')
  File "/usr/lib/python3/dist-packages/nbxmpp/util.py", line 492, in notify
    func(self, signal_name, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/nbxmpp/client.py", line 387, in _on_connected
    self.set_state(StreamState.CONNECTED)
  File "/usr/lib/python3/dist-packages/nbxmpp/client.py", line 218, in set_state
    self._xmpp_state_machine()
  File "/usr/lib/python3/dist-packages/nbxmpp/client.py", line 528, in _xmpp_state_machine
    self._con.start_tls_negotiation()
  File "/usr/lib/python3/dist-packages/nbxmpp/tcp.py", line 166, in start_tls_negotiation
    tls_client.set_advertised_protocols(['xmpp-client'])
AttributeError: 'GTlsClientConnectionGnutls' object has no attribute 'set_advertised_protocols'

Steps to reproduce the problem

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