Error Loading libraries, please wait... Failed to start the minecraft server java.lang.NullPointerException at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:213) ~[spigot.jar:git-Spigot-044d928-e8c6403] at com.google.common.collect.Lists$ReverseList.(Lists.java:767) ~[spigot.jar:git-Spigot-044d928-e8c6403] at com.google.common.collect.Lists.reverse(Lists.java:759) ~[spigot.jar:git-Spigot-044d928-e8c6403] at net.minecraft.server.v1_8_R3.UserCache.b(UserCache.java:191) ~[spigot.jar:git-Spigot-044d928-e8c6403] at net.minecraft.server.v1_8_R3.UserCache.(UserCache.java:70) ~[spigot.jar:git-Spigot-044d928-e8c6403] at net.minecraft.server.v1_8_R3.MinecraftServer.(MinecraftServer.java:136) ~[spigot.jar:git-Spigot-044d928-e8c6403] at net.minecraft.server.v1_8_R3.DedicatedServer.(DedicatedServer.java:43) ~[spigot.jar:git-Spigot-044d928-e8c6403] at net.minecraft.server.v1_8_R3.MinecraftServer.main(MinecraftServer.java:926) [spigot.jar:git-Spigot-044d928-e8c6403] at org.bukkit.craftbukkit.Main.main(Main.java:193) [spigot.jar:git-Spigot-044d928-e8c6403]
Cause of Error Your server storage got full and the usercashe.json file got corrupted.
Solution Stop the server Delete the usercashe.json file from your servers FTP file access. Then start your server. If this does not work please contact our customer support.