From 942d4995c52e8755100a72052d9f0d0f3bb62a17 Mon Sep 17 00:00:00 2001
From: Jayme Rotsaert <jayme@rotsaert.be>
Date: Wed, 1 Aug 2018 18:16:48 +0200
Subject: [PATCH] Fix: fatal Call to a member function getLocation(), before
 normal error is thrown

---
 src/Error/Error.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Error/Error.php b/src/Error/Error.php
index 1060161..e1f526a 100644
--- a/src/Error/Error.php
+++ b/src/Error/Error.php
@@ -271,7 +271,7 @@ class Error extends \Exception implements \JsonSerializable, ClientAware
                 $this->locations = array_filter(
                     array_map(
                         function ($node) {
-                            if ($node->loc) {
+                            if ($node->loc && $node->loc->source) {
                                 return $node->loc->source->getLocation($node->loc->start);
                             }
                         },