java.lang.NullPointerException: Post-rendering entity in world

java.lang.NullPointerException: Post-rendering entity in world
    at dpf.b(SourceFile:520)
    at dpg.c(SourceFile:309)
    at dpf.a(SourceFile:392)
    at din.a(SourceFile:67)
    at div.a(SourceFile:358)
    at dki.b(SourceFile:887)
    at dki.a(SourceFile:766)
    at dki.a(SourceFile:630)
    at cvi.d(SourceFile:954)
    at cvi.b(SourceFile:411)
    at net.minecraft.client.main.Main.main(SourceFile:154)