fix

plugins/services/anti_spam.py

@@ -89,7 +89,15 @@ class AntiSpam:
         Returns:
             bool: True if the message is considered spam, False otherwise.
         """
-        user = self.user_data[nick.lower()]
+        nick = nick.lower()
+        if nick not in self.user_data:
+            self.user_data[nick] = {
+                'messages': deque(maxlen=int(self.config.get('repeat_limit', 3))),
+                'timestamps': deque(maxlen=int(self.config.get('spam_limit', 5))),
+                'mentions': deque(maxlen=int(self.config.get('mention_limit', 2)))
+            }
+        user = self.user_data[nick]
+
         now = time.time()
 
         # Check message length