bug report

[FineXD]

[15:13:19 WARN]: Unexpected exception while parsing console command "arm help"
org.bukkit.command.CommandException: Unhandled exception executing command 'arm' in plugin AdvancedRegionMarket v3.5.3
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.v1_20_R1.CraftServer.dispatchCommand(CraftServer.java:877) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3871-Spigot-d2eba2c-3f9263b]
at org.bukkit.craftbukkit.v1_20_R1.CraftServer.dispatchServerCommand(CraftServer.java:862) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3871-Spigot-d2eba2c-3f9263b]
at net.minecraft.server.dedicated.DedicatedServer.bf(DedicatedServer.java:412) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3871-Spigot-d2eba2c-3f9263b]
at net.minecraft.server.dedicated.DedicatedServer.b(DedicatedServer.java:388) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3871-Spigot-d2eba2c-3f9263b]
at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:1197) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3871-Spigot-d2eba2c-3f9263b]
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1014) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3871-Spigot-d2eba2c-3f9263b]
at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:303) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3871-Spigot-d2eba2c-3f9263b]
at java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.NullPointerException: Cannot invoke "net.alex9849.arm.handler.CommandHandler.executeCommand(org.bukkit.command.CommandSender, String, String)" because "this.commandHandler" is null
at net.alex9849.arm.AdvancedRegionMarket.onCommand(AdvancedRegionMarket.java:834) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
... 9 more
i dont know why this happend i deleted a region on worldguard and arm broke. the only command that works is /arm itself which shows : run /arm help