From 612e501086aa0ba00d5145ea2264c6cce3ad0c5f Mon Sep 17 00:00:00 2001
From: William Desportes <williamdes@wdes.fr>
Date: Sun, 9 Feb 2020 16:25:03 +0100
Subject: [PATCH] Fix php notice when global lang does not exist

Signed-off-by: William Desportes <williamdes@wdes.fr>
---
 libraries/classes/Core.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/classes/Core.php b/libraries/classes/Core.php
index 2b17fcc0ad..5a7ee91e23 100644
--- a/libraries/classes/Core.php
+++ b/libraries/classes/Core.php
@@ -331,7 +331,7 @@ class Core
         ];
 
         $lang = 'en';
-        if (in_array($GLOBALS['lang'], $php_doc_languages)) {
+        if (isset($GLOBALS['lang']) && in_array($GLOBALS['lang'], $php_doc_languages)) {
             $lang = $GLOBALS['lang'];
         }