From db92647a5541d4860f61491374f7019a8fc3820a Mon Sep 17 00:00:00 2001
From: ardiakov <adiakov.work@gmail.com>
Date: Mon, 21 Oct 2019 17:04:57 +0300
Subject: [PATCH] Locale fix

---
 Locale.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Locale.php b/Locale.php
index 931400d4..fa2da7e5 100644
--- a/Locale.php
+++ b/Locale.php
@@ -85,7 +85,9 @@ public static function getFallback($locale): ?string
 
             array_pop($localeSubTags);
 
-            return locale_compose($localeSubTags);
+            $fallback = locale_compose($localeSubTags);
+
+            return false !== $fallback ? $fallback : null;
         }
 
         if (false !== $pos = strrpos($locale, '_')) {