[10:40:10 WARN]: java.lang.NullPointerException
[10:40:10 WARN]:        at ru.MySQL.SQLClass.GetSQL(SQLClass.java:56)
[10:40:10 WARN]:        at ru.utils.TagSQL.getBuyG(TagSQL.java:18)
[10:40:10 WARN]:        at ru.gui.TagPlayer.OpenTag(TagPlayer.java:83)
[10:40:10 WARN]:        at ru.lscmd.onCommand(lscmd.java:47)
[10:40:10 WARN]:        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
[10:40:10 WARN]:        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141)
[10:40:10 WARN]:        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648)
[10:40:10 WARN]:        at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1399)
[10:40:10 WARN]:        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1234)
[10:40:10 WARN]:        at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45)
[10:40:10 WARN]:        at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1)
[10:40:10 WARN]:        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13)
[10:40:10 WARN]:        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
[10:40:10 WARN]:        at java.util.concurrent.FutureTask.run(Unknown Source)
[10:40:10 WARN]:        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46)
[10:40:10 WARN]:        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748)
[10:40:10 WARN]:        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406)
[10:40:10 WARN]:        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679)
[10:40:10 WARN]:        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577)
[10:40:10 WARN]:        at java.lang.Thread.run(Unknown Source)
[10:40:10 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'ls' in plugin LSRVCore v1.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1399) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1234) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_51]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_51]
        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_51]
Caused by: java.lang.NullPointerException
        at ru.utils.TagSQL.getBuyG(TagSQL.java:19) ~[?:?]
        at ru.gui.TagPlayer.OpenTag(TagPlayer.java:83) ~[?:?]
        at ru.lscmd.onCommand(lscmd.java:47) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
        ... 15 more