From b2b8c62209ebe051cddeb7b8fd3963b51a81a17e Mon Sep 17 00:00:00 2001
From: Andreas Braun <git@alcaeus.org>
Date: Sat, 7 Jul 2018 14:17:24 +0200
Subject: [PATCH] Fix access to non-existing write results

Fixes #231.
---
 lib/Alcaeus/MongoDbAdapter/ExceptionConverter.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Alcaeus/MongoDbAdapter/ExceptionConverter.php b/lib/Alcaeus/MongoDbAdapter/ExceptionConverter.php
index 8838a69..48b09de 100644
--- a/lib/Alcaeus/MongoDbAdapter/ExceptionConverter.php
+++ b/lib/Alcaeus/MongoDbAdapter/ExceptionConverter.php
@@ -45,7 +45,7 @@ public static function toLegacy(Exception\Exception $e, $fallbackClass = 'MongoE
             case Exception\WriteException::class:
                 $writeResult = $e->getWriteResult();
 
-                if ($writeResult) {
+                if ($writeResult && $writeResult->getWriteErrors() !== []) {
                     $writeError = $writeResult->getWriteErrors()[0];
 
                     $message = $writeError->getMessage();