java.lang.NullPointerException: Exception in server tick loop
	at azi.a(SourceFile:124)
	at azi.apply(SourceFile:121)
	at beh.a(SourceFile:53)
	at beh.apply(SourceFile:50)
	at bei.a(SourceFile:67)
	at bei.a(SourceFile:90)
	at azh.f(SourceFile:49)
	at azh.c(SourceFile:39)
	at bff.a(SourceFile:551)
	at aqr.a(SourceFile:290)
	at bif.b(SourceFile:20)
	at arv.a(SourceFile:261)
	at arv.a(SourceFile:49)
	at arj.a(SourceFile:389)
	at asn.a(SourceFile:56)
	at bgt.a(SourceFile:472)
	at qt.a(SourceFile:174)
	at bff.a(SourceFile:872)
	at qt.c(SourceFile:104)
	at net.minecraft.server.MinecraftServer.k(SourceFile:314)
	at cyk.a(SourceFile:111)
	at cyk.i(SourceFile:127)
	at net.minecraft.server.MinecraftServer.run(SourceFile:418)
	at java.lang.Thread.run(Thread.java:745)