22.07 13:36:29 [Server] ERROR null
22.07 13:36:29 [Server] INFO org.bukkit.command.CommandException: Unhandled exception executing command 'sellstick' in plugin SellStick v8.0.2
22.07 13:36:29 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648) ~[spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1397) [spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1232) [spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_171]
22.07 13:36:29 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_171]
22.07 13:36:29 [Server] INFO at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_171]
22.07 13:36:29 [Server] INFO Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_8_R3/NBTBase
22.07 13:36:29 [Server] INFO at com.acropolismc.play.sellstick.SellStickCommand.onCommand(SellStickCommand.java:82) ~[?:?]
22.07 13:36:29 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO ... 15 more
22.07 13:36:29 [Server] INFO Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_8_R3.NBTBase
22.07 13:36:29 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:105) ~[spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:100) ~[spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_171]
22.07 13:36:29 [Server] INFO at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_171]
22.07 13:36:29 [Server] INFO at com.acropolismc.play.sellstick.SellStickCommand.onCommand(SellStickCommand.java:82) ~[?:?]
22.07 13:36:29 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot-1.12.2.jar:git-Spigot-642f6d2-fbe3046]
22.07 13:36:29 [Server] INFO ... 15 more