From 8b4a38cef75d73c7826ea38e7d08d09e96279564 Mon Sep 17 00:00:00 2001
From: Aaron Parecki <aaron@parecki.com>
Date: Thu, 30 Aug 2018 13:12:41 -0700
Subject: [PATCH] catch error with rel-urls

---
 lib/XRay/Formats/HTML.php | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/lib/XRay/Formats/HTML.php b/lib/XRay/Formats/HTML.php
index 37c2b06..3f83893 100644
--- a/lib/XRay/Formats/HTML.php
+++ b/lib/XRay/Formats/HTML.php
@@ -102,12 +102,14 @@ class HTML extends Format {
 
       foreach($mf2['rel-urls'] as $relurl => $reltype) {
 
-        if(in_array('alternate', $reltype['rels']) && $reltype['type'] == 'application/mf2+json') {
-          $alternates['mf2'][] = $relurl;
-        }
+        if(isset($reltype['type'])) {
+          if(in_array('alternate', $reltype['rels']) && $reltype['type'] == 'application/mf2+json') {
+            $alternates['mf2'][] = $relurl;
+          }
 
-        if(in_array('alternate', $reltype['rels']) && $reltype['type'] == 'application/activity+json') {
-          $alternates['as2'][] = $relurl;
+          if(in_array('alternate', $reltype['rels']) && $reltype['type'] == 'application/activity+json') {
+            $alternates['as2'][] = $relurl;
+          }
         }
 
       }