fixed enterFrame event error
diff --git a/player/js/animation/AnimationItem.js b/player/js/animation/AnimationItem.js
index a9af1ff..c3e0ef7 100644
--- a/player/js/animation/AnimationItem.js
+++ b/player/js/animation/AnimationItem.js
@@ -334,7 +334,7 @@
 };
 
 AnimationItem.prototype.renderFrame = function () {
-  if (this.isLoaded === false) {
+  if (this.isLoaded === false || !this.renderer) {
     return;
   }
   try {