fixed issue: Undefined index: plusminus #467

#467
sabre-io · Nov 9, 2023 · f1c6936 · f1c6936
1 parent 9341286
commit f1c6936
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/DateTimeParser.php b/lib/DateTimeParser.php
@@ -93,7 +93,7 @@ public static function parseDuration(string $duration): \DateInterval
 
         $invert = false;
 
-        if ('-' === $matches['plusminus']) {
+        if (isset($matches['plusminus']) && '-' === $matches['plusminus']) {
             $invert = true;
         }