Hello, idk why but when i create a world in singleplayer it crashes, help me!
Crash log (?)
---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.
Time: 28/01/18 16.50
Description: Starting integrated server
java.lang.ExceptionInInitializerError
at net.minecraft.server.MinecraftServer.<init>(MinecraftServer.java:146)
at net.minecraft.server.integrated.IntegratedServer.<init>(IntegratedServer.java:45)
at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2091)
at net.minecraft.client.gui.GuiCreateWorld.fu
