cli: Fix exit traceback on Twisted based loop (e.g.; pb bridge).

libervia/cli/base.py

@@ -33,6 +33,7 @@ from typing import Optional, Set, Union
 import xml.etree.ElementTree as ET
 
 from rich import console
+from twisted.internet.error import ReactorNotRunning
 
 from libervia.backend.core import exceptions
 from libervia.backend.core.i18n import _
@@ -856,7 +857,13 @@ class LiberviaCli:
         except SystemExit as e:
             # The loop is stopped, but we execute it one more time to call `a_quit` which
             # will call any cleaning method including async ones.
-            asyncio.get_event_loop().run_until_complete(self.a_quit(e.code))
+            try:
+                asyncio.get_event_loop().run_until_complete(self.a_quit(int(e.code or 0)))
+            except ReactorNotRunning:
+                # This error happens with Twisted loops, we just exit cleanly. "a_quit" is
+                # finishing when this error is raised, so cleaning callbacks are run as
+                # expected.
+                sys.exit(e.code)
 
     @classmethod
     def run(cls):