From c178b22c109450b54b4bcdd009dd86bb1b09a211 Mon Sep 17 00:00:00 2001
From: Flavio Copes <copesc@gmail.com>
Date: Mon, 17 Jul 2017 18:10:00 +0200
Subject: [PATCH] Check if medium thumbnail exists before resetting

---
 CHANGELOG.md                                  | 6 ++++++
 system/src/Grav/Common/Page/Medium/Medium.php | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 83938af6e..01ecd76a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# v1.3.1
+## 07/xx/2017
+
+1. [](#bugfix)
+    * Check if medium thumbnail exists before resetting
+
 # v1.3.0
 ## 07/16/2017
 
diff --git a/system/src/Grav/Common/Page/Medium/Medium.php b/system/src/Grav/Common/Page/Medium/Medium.php
index d63f12ed7..e817375b9 100644
--- a/system/src/Grav/Common/Page/Medium/Medium.php
+++ b/system/src/Grav/Common/Page/Medium/Medium.php
@@ -367,7 +367,7 @@ class Medium extends Data implements RenderableInterface
 
         $this->mode = $mode;
 
-        return $mode === 'thumbnail' ? $this->getThumbnail()->reset() : $this->reset();
+        return $mode === 'thumbnail' ? ($this->getThumbnail() ? $this->getThumbnail()->reset() : null) : $this->reset();
     }
 
     /**