Uh oh! You've found an error in CHDiscord.
This happened while running your code, so you may be able to find a workaround, but is ultimately an issue in CHDiscord.
The following code caused the error:
@text = ''
discord_broadcast('console', @text)
on or around D:\Cadabra\plugins\CommandHelper\auto_include.ms:142.
Please report this to the developers, and be sure to include the version numbers:
Server version: 1.12.2-R0.1-SNAPSHOT;
CommandHelper version: 3.3.2;
Loaded extensions and versions:
CHFiles (2.1.2)
CHDiscord (1.2.1)
CHLogBlock (0.1.1)
CHDangerous (1.0.2)
SKCompat (2.1.1)
Core (3.3.2)
CHSpigot (1.5.1)
Here's the stacktrace:
java.lang.IllegalArgumentException: Provided text for message may not be empty
        at net.dv8tion.jda.core.utils.Checks.notEmpty(Checks.java:63)
        at net.dv8tion.jda.core.entities.MessageChannel.sendMessage(MessageChannel.java:328)
        at net.dv8tion.jda.core.entities.impl.TextChannelImpl.sendMessage(TextChannelImpl.java:315)
        at me.pseudoknight.chdiscord.Functions$discord_broadcast.exec(Functions.java:135)
        at com.laytonsmith.core.Script.eval(Script.java:372)
        at com.laytonsmith.core.Procedure.execute(Procedure.java:217)
        at com.laytonsmith.core.Procedure.cexecute(Procedure.java:167)
        at com.laytonsmith.core.Script.eval(Script.java:301)
        at com.laytonsmith.core.Procedure.execute(Procedure.java:217)
        at com.laytonsmith.core.Procedure.cexecute(Procedure.java:167)
        at com.laytonsmith.core.Script.eval(Script.java:301)
        at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:2197)
        at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:2156)
        at com.laytonsmith.core.constructs.CClosure.execute(CClosure.java:186)
        at com.laytonsmith.abstraction.bukkit.BukkitMCCommand.handleCustomCommand(BukkitMCCommand.java:256)
        at com.laytonsmith.commandhelper.CommandHelperPlugin.onCommand(CommandHelperPlugin.java:606)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141)
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648)
        at com.laytonsmith.abstraction.bukkit.BukkitMCServer.runasConsole(BukkitMCServer.java:357)
        at com.laytonsmith.core.functions.Meta$runas.exec(Meta.java:139)
        at com.laytonsmith.core.Script.eval(Script.java:372)
        at com.laytonsmith.core.Script.seval(Script.java:244)
        at com.laytonsmith.core.functions.BasicLogic$_if.execs(BasicLogic.java:85)
        at com.laytonsmith.core.Script.eval(Script.java:330)
        at com.laytonsmith.core.Script.eval(Script.java:340)
        at com.laytonsmith.core.Script.seval(Script.java:244)
        at com.laytonsmith.core.functions.BasicLogic$_if.execs(BasicLogic.java:85)
        at com.laytonsmith.core.Script.eval(Script.java:330)
        at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:2197)
        at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:2156)
        at com.laytonsmith.core.events.AbstractEvent.execute(AbstractEvent.java:115)
        at com.laytonsmith.core.events.BoundEvent.execute(BoundEvent.java:300)
        at com.laytonsmith.core.events.BoundEvent.trigger(BoundEvent.java:257)
        at com.laytonsmith.core.events.EventUtils.FireListeners(EventUtils.java:307)
        at com.laytonsmith.core.events.EventUtils.TriggerListener(EventUtils.java:294)
        at me.pseudoknight.chdiscord.DiscordListener.lambda$onGuildMessageReceived$0(DiscordListener.java:32)
        at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftFuture.run(CraftFuture.java:85)
        at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:361)
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:739)
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406)
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679)
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577)
        at java.lang.Thread.run(Unknown Source)