ClientXMPP.process() is not available since slixmpp-1.9.0 (XMPP backend broken) (#1768)

* ClientXMPP.process() is not available since slixmpp-1.9.0

* docs: add details to CHANGES

---------

Co-authored-by: Sijis Aviles <sijis.aviles@gmail.com>

Author: hlad

CHANGES.rst

@@ -3,6 +3,7 @@ v9.9.9 (unreleased)
 - chore: add releases script (#1767)
 - refactor: remove webtest dependency (#1769)
 - feat: support editable installed entrypoint plugins (#1766)
+- fix: XMPP backend referencing invalid method (#1768)
 
 
 v6.2.1 (2026-06-06)

errbot/backends/xmpp.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import asyncio
 import logging
 import sys
 from datetime import datetime
@@ -396,7 +397,7 @@ def disconnect(self) -> None:
         self.connected = False
 
     def serve_forever(self) -> None:
-        self.client.process()
+        asyncio.get_event_loop().run_forever()
 
     def add_event_handler(self, name: str, cb: Callable) -> None:
         self.client.add_event_handler(name, cb)