When i connect to Server it chrashes

[Brewer_1]

[18:55:56] [Client thread/FATAL]: Reported exception thrown!
net.minecraft.util.ReportedException: Rendering Block Entity
    at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147549_a(SourceFile:107) ~[bmk.class:?]
    at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147544_a(SourceFile:92) ~[bmk.class:?]
    at net.minecraft.client.renderer.RenderGlobal.func_147589_a(RenderGlobal.java:483) ~[bma.class:?]
    at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1224) ~[blt.class:?]
    at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1011) ~[blt.class:?]
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1001) ~[bao.class:?]
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898) [bao.class:?]
    at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_65]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_65]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_65]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_65]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
Caused by: java.lang.NullPointerException
    at net.minecraft.tileentity.MobSpawnerBaseLogic.func_98265_a(SourceFile:110) ~[agq.class:?]
    at net.minecraft.tileentity.MobSpawnerBaseLogic.func_98281_h(SourceFile:236) ~[agq.class:?]
    at net.minecraft.client.renderer.tileentity.TileEntityMobSpawnerRenderer.func_147517_a(SourceFile:20) ~[bmp.class:?]
    at net.minecraft.client.renderer.tileentity.TileEntityMobSpawnerRenderer.func_147500_a(SourceFile:15) ~[bmp.class:?]
    at net.minecraft.client.renderer.tileentity.TileEntityMobSpawnerRenderer.func_147500_a(SourceFile:10) ~[bmp.class:?]
    at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147549_a(SourceFile:100) ~[bmk.class:?]
    ... 13 more

Edited June 24, 2016 by Brewer_1