为什么点击gui就报错
[16:56:25 ERROR]: Could not pass event InventoryClickEvent to OnlineReward v2.0.0-BETA
org.bukkit.event.EventException: null
at com.destroystokyo.paper.event.executor.MethodHandleEventExecutor.execute(MethodHandleEventExecutor.java:37) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:513) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:2002) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at net.minecraft.server.v1_12_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at net.minecraft.server.v1_12_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:14) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_211]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_211]
at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:845) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:423) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:769) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:661) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_211]
Caused by: java.lang.BootstrapMethodError: java.lang.NoClassDefFoundError:
at com.blank038.onlinereward.gui.RewardGui.lambda$open$2(RewardGui.java:70) ~[?:?]
at com.aystudio.core.bukkit.util.inventory.GuiModel.run(GuiModel.java:198) ~[?:?]
at com.aystudio.core.bukkit.util.inventory.GuiModel.onInventoryClick(GuiModel.java:214) ~[?:?]
at com.destroystokyo.paper.event.executor.MethodHandleEventExecutor.execute(MethodHandleEventExecutor.java:35) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
... 15 more
Caused by: java.lang.NoClassDefFoundError:
at com.blank038.onlinereward.gui.RewardGui.lambda$open$2(RewardGui.java:70) ~[?:?]
at com.aystudio.core.bukkit.util.inventory.GuiModel.run(GuiModel.java:198) ~[?:?]
at com.aystudio.core.bukkit.util.inventory.GuiModel.onInventoryClick(GuiModel.java:214) ~[?:?]
at com.destroystokyo.paper.event.executor.MethodHandleEventExecutor.execute(MethodHandleEventExecutor.java:35) ~[patched_1.12.2.jar:git-Paper-"41953c5"]
... 15 more