Solved ***Fixed*** SERVER IS CRASHING ON STARTUP!!!

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Failed to start the minecraft server
java.lang.NullPointerException
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:213) ~[spigot:git-Spigot-044d928-e8c6403]
at com.google.common.collect.Lists$ReverseList.<init>(Lists.java:767) ~[spigot:git-Spigot-044d928-e8c6403]
at com.google.common.collect.Lists.reverse(Lists.java:759) ~[spigot:git-Spigot-044d928-e8c6403]
at net.minecraft.server.v1_8_R3.UserCache.b(UserCache.java:191) ~[spigot:git-Spigot-044d928-e8c6403]
at net.minecraft.server.v1_8_R3.UserCache.<init>(UserCache.java:70) ~[spigot:git-Spigot-044d928-e8c6403]
at net.minecraft.server.v1_8_R3.MinecraftServer.<init>(MinecraftServer.java:136) ~[spigot:git-Spigot-044d928-e8c6403]
at net.minecraft.server.v1_8_R3.DedicatedServer.<init>(DedicatedServer.java:43) ~[spigot:git-Spigot-044d928-e8c6403]
at net.minecraft.server.v1_8_R3.MinecraftServer.main(MinecraftServer.java:926) [spigot:git-Spigot-044d928-e8c6403]
at org.bukkit.craftbukkit.Main.main(Main.java:193) [spigot:git-Spigot-044d928-e8c6403]

Nevermind Deleting usercache.json Fixed It