[00:49:24 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'jointime' in plugin JoinTime v1.1
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[server.jar:git-Paper-1493]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:151) ~[server.jar:git-Paper-1493]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:685) ~[server.jar:git-Paper-1493]
        at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1473) ~[server.jar:git-Paper-1493]
        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1278) ~[server.jar:git-Paper-1493]
        at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) ~[server.jar:git-Paper-1493]
        at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[server.jar:git-Paper-1493]
        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:14) ~[server.jar:git-Paper-1493]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_171]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_171]
        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [server.jar:git-Paper-1493]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:849) [server.jar:git-Paper-1493]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:427) [server.jar:git-Paper-1493]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:773) [server.jar:git-Paper-1493]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:665) [server.jar:git-Paper-1493]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_171]
Caused by: java.lang.NullPointerException
        at me.Nort721.JoinTime.Commands.JoinTimeCommand.onCommand(JoinTimeCommand.java:110) ~[JoinTime%20(1).jar:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[server.jar:git-Paper-1493]
        ... 15 more