From dcd3b1689f55d2db74a59c3b0fe3ee1e962deabf Mon Sep 17 00:00:00 2001
From: Marcelo Andrade R <marcelo.andrade.r@gmail.com>
Date: Tue, 27 Feb 2018 07:59:24 -0500
Subject: [PATCH] Fix PHP 7.2 compatibility issue #188

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

diff --git a/src/Attachment.php b/src/Attachment.php
index c2c29ab..364609c 100644
--- a/src/Attachment.php
+++ b/src/Attachment.php
@@ -386,7 +386,7 @@ public function originalFilename()
      */
     public function getInstanceClass()
     {
-        return get_class($this->instance);
+        return is_null($this->instance) ? get_class() : get_class($this->instance);
     }
 
     /**