[triggers] Fix checking groups

triggers/triggers.py

@@ -19,11 +19,9 @@
 from __future__ import annotations
 
 from typing import Any
-from typing import Optional
 from typing import Union
 
 import logging
-from dataclasses import dataclass
 from functools import partial
 
 from gajim.common import app
@@ -196,6 +194,9 @@ class Triggers(GajimPlugin):
         client = app.get_client(event.account)
         contact = client.get_module('Contacts').get_contact(event.jid)
 
+        if contact.is_groupchat or not contact.is_in_roster:
+            return False
+
         group_found = False
         for group in contact.groups:
             if group in rule_recipients: