From 8969c6f1ae599f4ae1065fc64fcd652a9f5785bc Mon Sep 17 00:00:00 2001
From: Etjen Ymeraj <eymeraj@M20160010.local>
Date: Tue, 11 Dec 2018 14:12:22 +0100
Subject: [PATCH] check for attributes count

---
 Spine/SerializeOperation.swift | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Spine/SerializeOperation.swift b/Spine/SerializeOperation.swift
index 839c986b..6601fba2 100644
--- a/Spine/SerializeOperation.swift
+++ b/Spine/SerializeOperation.swift
@@ -91,8 +91,10 @@ class SerializeOperation: Operation {
 			}
 		}
 		
-		serializedData["attributes"] = attributes
-	}
+    if attributes.count > 0 {
+      serializedData["attributes"] = attributes
+    }
+  }
 
 	
 	// MARK: Relationships