From f5ea75c583fb89f2b096404f14af4dd4557fffac Mon Sep 17 00:00:00 2001
From: Nicolas Boisselier <nicolas.boisselier@gmail.com>
Date: Wed, 16 May 2018 12:45:10 +0100
Subject: [PATCH] lib/lua/nb.lua

---
 lib/lua/nb.lua | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/lua/nb.lua b/lib/lua/nb.lua
index a046e23d..4c463b04 100644
--- a/lib/lua/nb.lua
+++ b/lib/lua/nb.lua
@@ -35,6 +35,7 @@ function nb:ngx_location_md(fheader,ffooter)
 
 	local file = ngx.var.document_root .. ngx.var.uri;
 	local content = self:readall(file)
+	if not content then return end
 
 	local vars = {}
 	-- Extract title from h1
-- 
2.47.3