Spoiler: Error Code (Text): [08:04:47 ERROR]: null org.bukkit.command.CommandException: Unhandled exception executing command 'clearchat' in plugin ChatPro v1.0.1 at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:641) ~[spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1162) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:997) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_171] at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_171] at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] at java.lang.Thread.run(Unknown Source) [?:1.8.0_171] Caused by: java.lang.NullPointerException at me.tozymc.chatpro.cmds.ClearChatCmd.onCommand(ClearChatCmd.java:24) ~[?:?] at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] ... 15 more Spoiler: Class ClearChatCmd Code (Java): package me.tozymc.chatpro.cmds; import me.tozymc.chatpro.ChatPro; import me.tozymc.chatpro.utils.Utils; import org.bukkit.Bukkit; import org.bukkit.command.Command; import org.bukkit.command.CommandExecutor; import org.bukkit.command.CommandSender; import org.bukkit.entity.Player; import static me.tozymc.chatpro.utils.Utils.replace; import static me.tozymc.chatpro.utils.Utils.sendHelp; public class ClearChatCmd implements CommandExecutor { private ChatPro plugin; public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) { if (cmd.getName().equalsIgnoreCase("clearchat")) { if (args.length == 0) { if (Utils.hasPerms("clear", sender)) { for (int i = 0; i <= 120; i++) { sender.sendMessage(""); } sender.sendMessage(plugin.getConfig().getString("Message.ClearChat")); } } if (args.length == 1) { if ((args[0].equalsIgnoreCase("all")) && (Utils.hasPerms("admin", sender))) { for (Player sender1 : Bukkit.getOnlinePlayers()) { for (int i = 0; i <= 120; i++) { sender1.sendMessage(""); } sender1.sendMessage(replace(plugin.getConfig().getString("Message.ClearAllChat"))); } } } else { sendHelp(sender); } } return true; } } Spoiler: onEnable() Code (Java): package me.tozymc.chatpro; import me.tozymc.chatpro.cmds.ChatProCmd; import me.tozymc.chatpro.cmds.ClearChatCmd; import me.tozymc.chatpro.listeners.ChatLock; import org.bukkit.Bukkit; import org.bukkit.plugin.java.JavaPlugin; public final class ChatPro extends JavaPlugin { public boolean chat; public void onEnable() { Bukkit.getServer().getPluginManager().registerEvents(new ChatLock(), this); this.getConfig().options().copyDefaults(true); this.getConfig().addDefault("Chat", true); this.getConfig().addDefault("Prefix", "&3&lChatPro &7ยป "); this.getConfig().addDefault("Message.NoPerms", "&cYou not have permission to do this!"); this.getConfig().addDefault("Message.ChatLock", "Chat has &c&lLOCK&7!"); this.getConfig().addDefault("Message.ChatUnLock", "Chat has &a&lUNLOCK&7!"); this.getConfig().addDefault("Message.ChatLocked", "&cChat has locked!"); this.getConfig().addDefault("Message.ClearChat", "Chat has cleaned!"); this.getConfig().addDefault("Message.ClearAllChat", "All chat has cleaned!"); this.saveConfig(); getCommand("chatpro").setExecutor(new ChatProCmd()); getCommand("clearchat").setExecutor(new ClearChatCmd()); } public void onDisable() { } } I have encountered the above error, I spent all day fixing the error, but no way. I think it's related to config! Hope everybody help please! Thank you! Spigot-api Version: 1.8.8
private ChatPro plugin = ChatPro.getPlugin(ChatPro.class); The reason that you are getting the error is because your plugin instance is null.
Don't think. Know. Stacktraces are really simple to read. https://bukkit.org/threads/how-to-r...ubleshoot-your-own-plugins-by-yourself.32457/