这是服务器日志

[14:14:17] [main/FATAL]: Failed to start the minecraft server
java.lang.NullPointerException
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:213) ~[PaperSpigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-PaperSpigot-5be55c3-18fbb24]
at com.google.common.collect.Lists$ReverseList.<init>(Lists.java:767) ~[PaperSpigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-PaperSpigot-5be55c3-18fbb24]
at com.google.common.collect.Lists.reverse(Lists.java:759) ~[PaperSpigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-PaperSpigot-5be55c3-18fbb24]
at net.minecraft.server.v1_8_R3.UserCache.b(UserCache.java:191) ~[PaperSpigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-PaperSpigot-5be55c3-18fbb24]
at net.minecraft.server.v1_8_R3.UserCache.<init>(UserCache.java:70) ~[PaperSpigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-PaperSpigot-5be55c3-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.<init>(MinecraftServer.java:126) ~[PaperSpigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-PaperSpigot-5be55c3-18fbb24]
at net.minecraft.server.v1_8_R3.DedicatedServer.<init>(DedicatedServer.java:43) ~[PaperSpigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-PaperSpigot-5be55c3-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.main(MinecraftServer.java:981) [PaperSpigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-PaperSpigot-5be55c3-18fbb24]
at org.bukkit.craftbukkit.Main.main(Main.java:201) [PaperSpigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-PaperSpigot-5be55c3-18fbb24]

已成功解决

换个服务商