refac/fix: tag attribute handling

backend/open_webui/utils/middleware.py

@@ -1619,9 +1619,13 @@ async def process_chat_response(
 
                         match = re.search(start_tag_pattern, content)
                         if match:
+                            try:
                                 attr_content = (
                                     match.group(1) if match.group(1) else ""
                                 )  # Ensure it's not None
+                            except:
+                                attr_content = ""
+
                             attributes = extract_attributes(
                                 attr_content
                             )  # Extract attributes safely