From 23c5a2ddb52dbb6a8b7d19dc21b5558a4f9e519f Mon Sep 17 00:00:00 2001
From: justcool393 <justcool393@gmail.com>
Date: Thu, 3 Nov 2022 18:14:55 -0500
Subject: [PATCH] handle case where is None

---
 files/helpers/regex.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/files/helpers/regex.py b/files/helpers/regex.py
index 96bbc3cc5..1a5f0733d 100644
--- a/files/helpers/regex.py
+++ b/files/helpers/regex.py
@@ -117,10 +117,12 @@ knowledgebase_page_regex = re.compile("[a-zA-Z0-9_\-]+", flags=re.A)
 
 def sub_matcher(match:re.Match, upper=False, replace_with:Union[dict[str, str], dict[str, List[str]]]=SLURS):
 	group_num = 0 if len(match.groups()) == 0 else 1
-	if match.group(group_num).startswith('<'):
+	match_str = match.group(group_num)
+	if match_str is None: return ""
+	if match_str.startswith('<'):
 		return match.group(group_num)
 	else:
-		repl = replace_with[match.group(group_num).lower()]
+		repl = replace_with[match_str.lower()]
 		if not isinstance(repl, str):
 			repl = random.choice(repl)
 		return repl if not upper or "<img" in repl else repl.upper()