fix this https://rdrama.net/post/18459/marseycapywalking-megathread-for-bugs-and-suggestions/6041092#context

files/helpers/alerts.py

@@ -157,6 +157,7 @@ def NOTIFY_USERS(text, v, oldtext=None, ghost=False, obj=None, followers_ping=Tr
 
 	for uid, keyword_notifs in keyword_users:
 		for word in keyword_notifs.lower().split('\n'):
+			if not word: continue
 			if word in text:
 				notify_users.add(uid)