From b36caceade9e25b94681809fb3811e7726deaf65 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 be2c9b5..254d395 100644
--- a/src/Error/Error.php
+++ b/src/Error/Error.php
@@ -265,7 +265,7 @@ class Error extends \Exception implements \JsonSerializable, ClientAware
                 }, $positions);
             } else if ($nodes) {
                 $this->locations = array_filter(array_map(function ($node) {
-                    if ($node->loc) {
+                    if ($node->loc && $node->loc->source) {
                         return $node->loc->source->getLocation($node->loc->start);
                     }
                 }, $nodes));