[20:02:58 ERROR]: Could not pass event AsyncPlayerChatEvent to BossShopPro v2.0.1
org.bukkit.event.EventException: null
    at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:72) ~[PaperSpigot.jar:git-Paper-454]
    at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:74) ~[PaperSpigot.jar:git-Paper-454]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[PaperSpigot.jar:git-Paper-454]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:513) ~[PaperSpigot.jar:git-Paper-454]
    at net.minecraft.server.v1_13_R2.PlayerConnection.chat(PlayerConnection.java:1712) ~[PaperSpigot.jar:git-Paper-454]
    at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1627) ~[PaperSpigot.jar:git-Paper-454]
    at net.minecraft.server.v1_13_R2.PacketPlayInChat$1.run(PacketPlayInChat.java:39) ~[PaperSpigot.jar:git-Paper-454]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514) ~[?:?]
    at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) [?:?]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) [?:?]
    at java.lang.Thread.run(Thread.java:844) [?:?]
Caused by: java.lang.IllegalStateException: Asynchronous command dispatch!
    at org.spigotmc.AsyncCatcher.catchOp(AsyncCatcher.java:15) ~[PaperSpigot.jar:git-Paper-454]
    at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:707) ~[PaperSpigot.jar:git-Paper-454]
    at org.bukkit.Bukkit.dispatchCommand(Bukkit.java:655) ~[PaperSpigot.jar:git-Paper-454]
    at org.black_ixx.bossshop.core.rewards.BSRewardTypeCommand.giveReward(BSRewardTypeCommand.java:43) ~[?:?]
    at org.black_ixx.bossshop.core.BSBuy.purchase(BSBuy.java:522) ~[?:?]
    at org.black_ixx.bossshop.core.BSInputType$1$1.receivedInput(BSInputType.java:30) ~[?:?]
    at org.black_ixx.bossshop.misc.userinput.BSChatUserInput.input(BSChatUserInput.java:35) ~[?:?]
    at org.black_ixx.bossshop.listeners.PlayerListener.chat(PlayerListener.java:67) ~[?:?]
    at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor157.execute(Unknown Source) ~[?:?]
    at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:70) ~[PaperSpigot.jar:git-Paper-454]
    ... 11 more