插件可以生效，但是后台会刷些下面的报告，不是很看得懂，希望又大佬指点一下
1.11.jar:git-Spigot-d60de0a-c25ddf0]
at com.OnlyNoobDied.GadgetsMenu.API.MainAPI.displayFirework(MainAPI.java:432) ~[?:?]
at com.OnlyNoobDied.GadgetsMenu.Cosmetics.Gadgets.Types.GadgetCreeperAstronaut$1.run(GadgetCreeperAstronaut.java:72) ~[?:?]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:730) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_111]
[19:43:12] [Server thread/WARN]: [GadgetsMenu] Task #30 for GadgetsMenu v3.5.17 generated an exception
java.lang.NullPointerException
at net.minecraft.server.v1_11_R1.EntityFireworks.<init>(EntityFireworks.java:33) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.createEntity(CraftWorld.java:1150) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:1183) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:850) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at com.OnlyNoobDied.GadgetsMenu.API.MainAPI.displayFirework(MainAPI.java:432) ~[?:?]
at com.OnlyNoobDied.GadgetsMenu.Cosmetics.Gadgets.Types.GadgetCreeperAstronaut$1.run(GadgetCreeperAstronaut.java:72) ~[?:?]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:730) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_111]
[19:43:12] [Server thread/WARN]: [GadgetsMenu] Task #30 for GadgetsMenu v3.5.17 generated an exception
java.lang.NullPointerException
at net.minecraft.server.v1_11_R1.EntityFireworks.<init>(EntityFireworks.java:33) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.createEntity(CraftWorld.java:1150) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:1183) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:850) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at com.OnlyNoobDied.GadgetsMenu.API.MainAPI.displayFirework(MainAPI.java:432) ~[?:?]
at com.OnlyNoobDied.GadgetsMenu.Cosmetics.Gadgets.Types.GadgetCreeperAstronaut$1.run(GadgetCreeperAstronaut.java:72) ~[?:?]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:730) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_111]
[19:43:12] [Server thread/WARN]: [GadgetsMenu] Task #30 for GadgetsMenu v3.5.17 generated an exception
java.lang.NullPointerException
at net.minecraft.server.v1_11_R1.EntityFireworks.<init>(EntityFireworks.java:33) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.createEntity(CraftWorld.java:1150) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:1183) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:850) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at com.OnlyNoobDied.GadgetsMenu.API.MainAPI.displayFirework(MainAPI.java:432) ~[?:?]
at com.OnlyNoobDied.GadgetsMenu.Cosmetics.Gadgets.Types.GadgetCreeperAstronaut$1.run(GadgetCreeperAstronaut.java:72) ~[?:?]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:730) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_111
1.11.jar:git-Spigot-d60de0a-c25ddf0]
at com.OnlyNoobDied.GadgetsMenu.API.MainAPI.displayFirework(MainAPI.java:432) ~[?:?]
at com.OnlyNoobDied.GadgetsMenu.Cosmetics.Gadgets.Types.GadgetCreeperAstronaut$1.run(GadgetCreeperAstronaut.java:72) ~[?:?]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:730) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_111]
[19:43:12] [Server thread/WARN]: [GadgetsMenu] Task #30 for GadgetsMenu v3.5.17 generated an exception
java.lang.NullPointerException
at net.minecraft.server.v1_11_R1.EntityFireworks.<init>(EntityFireworks.java:33) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.createEntity(CraftWorld.java:1150) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:1183) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:850) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at com.OnlyNoobDied.GadgetsMenu.API.MainAPI.displayFirework(MainAPI.java:432) ~[?:?]
at com.OnlyNoobDied.GadgetsMenu.Cosmetics.Gadgets.Types.GadgetCreeperAstronaut$1.run(GadgetCreeperAstronaut.java:72) ~[?:?]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:730) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_111]
[19:43:12] [Server thread/WARN]: [GadgetsMenu] Task #30 for GadgetsMenu v3.5.17 generated an exception
java.lang.NullPointerException
at net.minecraft.server.v1_11_R1.EntityFireworks.<init>(EntityFireworks.java:33) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.createEntity(CraftWorld.java:1150) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:1183) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:850) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at com.OnlyNoobDied.GadgetsMenu.API.MainAPI.displayFirework(MainAPI.java:432) ~[?:?]
at com.OnlyNoobDied.GadgetsMenu.Cosmetics.Gadgets.Types.GadgetCreeperAstronaut$1.run(GadgetCreeperAstronaut.java:72) ~[?:?]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:730) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_111]
[19:43:12] [Server thread/WARN]: [GadgetsMenu] Task #30 for GadgetsMenu v3.5.17 generated an exception
java.lang.NullPointerException
at net.minecraft.server.v1_11_R1.EntityFireworks.<init>(EntityFireworks.java:33) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.createEntity(CraftWorld.java:1150) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:1183) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.CraftWorld.spawn(CraftWorld.java:850) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at com.OnlyNoobDied.GadgetsMenu.API.MainAPI.displayFirework(MainAPI.java:432) ~[?:?]
at com.OnlyNoobDied.GadgetsMenu.Cosmetics.Gadgets.Types.GadgetCreeperAstronaut$1.run(GadgetCreeperAstronaut.java:72) ~[?:?]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:730) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot-1.11.jar:git-Spigot-d60de0a-c25ddf0]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_111