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[17:15:34] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.util.ReportedException: Exception ticking world
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:696) ~[MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:344) ~[ko.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:605) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:481) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_74]
Caused by: java.lang.NullPointerException: The property 'initialWeather' was not provided!
	at org.spongepowered.api.event.impl.ChangeWorldWeatherEvent$Impl.<init>(Unknown Source) ~[?:?]
	at org.spongepowered.api.event.impl.ChangeWorldWeatherEvent$Factory.apply(Unknown Source) ~[?:?]
	at org.spongepowered.api.event.impl.ChangeWorldWeatherEvent$Factory.apply(Unknown Source) ~[?:?]
	at org.spongepowered.api.event.SpongeEventFactoryUtils.createEventImpl(SpongeEventFactoryUtils.java:81) ~[SpongeEventFactoryUtils.class:1.8.9-1890-GUI-4.1.0-GUI-BETA-2871]
	at org.spongepowered.api.event.SpongeEventFactory.createChangeWorldWeatherEvent(SpongeEventFactory.java:4466) ~[SpongeEventFactory.class:1.8.9-1890-GUI-4.1.0-GUI-BETA-2871]
	at net.minecraft.world.World.handler$onUpdateWeatherReturn$0(World.java:190) ~[adm.class:?]
	at net.minecraft.world.World.func_72979_l(World.java:2461) ~[adm.class:?]
	at net.minecraft.world.WorldServer.func_72979_l(WorldServer.java:1064) ~[le.class:?]
	at net.minecraft.world.World.func_72835_b(World.java:2437) ~[adm.class:?]
	at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:175) ~[le.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:690) ~[MinecraftServer.class:?]
	... 4 more