Tile Entity Renderer Issue

When attempting to create a zombie horse spawner, the entire client crashed not the server (I was playing on my own private server). I used worldedit to get rid of the spawner, and when I came back, the zombie horse was spawned. An error log is in the attachment. From reading the error log, I believe that the problem was with rendering the zombie horse inside of the mob spawner, not actually spawning it. I have looked through the spawndata for the horse spawner, and found nothing that should crash the client. I will also include the schematic as an attachment. I recommend looking through the schematic with an NBT editor. After a little bit more testing, I have found out that this happens for any horse in a spawner.