diff --git a/app/utils/string.py b/app/utils/string.py
index 8759e99e..f5c7ae14 100644
--- a/app/utils/string.py
+++ b/app/utils/string.py
@@ -536,6 +536,8 @@ class StringUtils:
         """
         从地址中获取域名和端口号
         """
+        if not address:
+            return None, None
         if not address.startswith("http"):
             address = "http://" + address
         parts = address.split(":")