From e3439df0d7db02b7528f42801c61f5eb4a88fffb Mon Sep 17 00:00:00 2001
From: Patric Stout <truebrain@openttd.org>
Date: Tue, 24 Nov 2020 10:00:55 +0100
Subject: [PATCH] Fix: running wiki without --frontend-url broke startup

---
 truewiki/views/sitemap.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/truewiki/views/sitemap.py b/truewiki/views/sitemap.py
index 5e6e65b..b987fc0 100644
--- a/truewiki/views/sitemap.py
+++ b/truewiki/views/sitemap.py
@@ -90,7 +90,7 @@ def invalidate_cache() -> None:
 def click_sitemap(frontend_url):
     global FRONTEND_URL
 
-    if frontend_url.endswith("/"):
+    if frontend_url and frontend_url.endswith("/"):
         frontend_url = frontend_url[:-1]
 
     FRONTEND_URL = frontend_url