I made a pubg plugin but it didn't work

sandik.java

Code:

package minecraft.pubg.sandik;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.block.BlockPlaceEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.plugin.Plugin;

import minecraft.pubg.ana.Ana;

public class Sandik implements Listener{

    Plugin ana = Ana.getPlugin(Ana.class);
    @EventHandler
    public void sandik(BlockPlaceEvent e) {
        Player oyuncu = e.getPlayer();
            if(oyuncu.isOp()) {
                    Inventory inv = Bukkit.createInventory(oyuncu, 27,ChatColor.BLUE + "Sandık");
                    oyuncu.openInventory(inv);
                    ana.getConfig().set("x" + e.getBlockPlaced().getLocation().getX(), e.getBlockPlaced().getLocation().getX());
                    ana.getConfig().set("y" + e.getBlockPlaced().getLocation().getY(), e.getBlockPlaced().getLocation().getY());
                    ana.getConfig().set("z" + e.getBlockPlaced().getLocation().getZ(), e.getBlockPlaced().getLocation().getZ());
                    ana.getConfig().set("x" + e.getBlockPlaced().getLocation().getX() + "y" + e.getBlockPlaced().getLocation().getY() + "z" + e.getBlockPlaced().getLocation().getZ(), inv);
                    ana.getConfig().set("inv" + ana.getConfig().getInt("x" + e.getBlockPlaced().getLocation().getX()) + ana.getConfig().getInt("y" + e.getBlockPlaced().getLocation().getY()) +    ana.getConfig().getInt("z" + e.getBlockPlaced().getLocation().getZ()),inv);
                    oyuncu.sendMessage(ChatColor.BLUE + "Eğer guiyi kapatırsanız sandık kaydedilir ve bir daha düzenleyemezsiniz. eğer yanlışlıkla kapattıysanız kırın sandığı");
                    ana.saveConfig();
                }
            }
    @EventHandler
    public void sandigielleme(PlayerInteractEvent e) {
        Player oyuncu = e.getPlayer();
        Action eylem = e.getAction();
        Block blok = e.getClickedBlock();
        if(eylem.equals(Action.RIGHT_CLICK_BLOCK)) {
            if(blok.getType().equals(Material.CHEST)) {
                e.setCancelled(true);
                if(ana.getConfig().getInt("x" + blok.getX()) == blok.getX() && ana.getConfig().getInt("y" + blok.getY()) == blok.getY() && ana.getConfig().getInt("z" + blok.getZ()) == blok.getZ()) {
                    oyuncu.openInventory((Inventory) ana.getConfig().get("inv" + ana.getConfig().getInt("x" + blok.getLocation().getX()) + ana.getConfig().getInt("y" + blok.getLocation().getY()) + ana.getConfig().getInt("z" + blok.getLocation().getZ())));
                }
            }
        }  
    }
}

error:

Code:

[17:38:09 ERROR]: Cannot load plugins\PubgTurkce\config.yml
org.bukkit.configuration.InvalidConfigurationException: could not determine a constructor for the tag tag:yaml.org,2002:eek:rg.bukkit.craftbukkit.v1_16_R3.inventory.CraftInventoryCustom
in 'string', line 5, column 12:
          '0': &id001 !!org.bukkit.craftbukkit. ...
               ^

        at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:59) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:160) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:128) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(YamlConfiguration.java:188) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.plugin.java.JavaPlugin.reloadConfig(JavaPlugin.java:157) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.plugin.java.JavaPlugin.getConfig(JavaPlugin.java:133) ~[patched_1.16.5.jar:git-Paper-790]
        at minecraft.pubg.sandik.Sandik.sandik(Sandik.java:27) ~[?:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor79.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.16.5.jar:git-Paper-790]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:624) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.craftbukkit.v1_16_R3.event.CraftEventFactory.callBlockPlaceEvent(CraftEventFactory.java:398) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.ItemStack.placeItem(ItemStack.java:335) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.PlayerInteractManager.a(PlayerInteractManager.java:559) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.PlayerConnection.a(PlayerConnection.java:1714) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.PacketPlayInUseItem.a(PacketPlayInUseItem.java:32) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.PacketPlayInUseItem.a(PacketPlayInUseItem.java:10) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.PlayerConnectionUtils.lambda$ensureMainThread$1(PlayerConnectionUtils.java:35) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.TickTask.run(SourceFile:18) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.MinecraftServer.bb(MinecraftServer.java:1271) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.MinecraftServer.executeNext(MinecraftServer.java:1264) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeAll(IAsyncTaskHandler.java:95) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1400) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1135) ~[patched_1.16.5.jar:git-Paper-790]
        at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:291) ~[patched_1.16.5.jar:git-Paper-790]
        at java.lang.Thread.run(Thread.java:831) [?:?]
Caused by: org.yaml.snakeyaml.constructor.ConstructorException: could not determine a constructor for the tag tag:yaml.org,2002:eek:rg.bukkit.craftbukkit.v1_16_R3.inventory.CraftInventoryCustom
in 'string', line 5, column 12:
          '0': &id001 !!org.bukkit.craftbukkit. ...
               ^

        at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructUndefined.construct(SafeConstructor.java:574) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:229) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:219) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:479) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:190) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:460) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:556) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:28) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:229) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:219) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:479) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:190) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:460) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:556) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:28) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:229) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:219) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:479) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:190) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:460) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:556) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:28) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:229) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:219) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:479) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:190) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:460) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:556) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:28) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:229) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:219) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructDocument(BaseConstructor.java:173) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:157) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:490) ~[patched_1.16.5.jar:git-Paper-790]
        at org.yaml.snakeyaml.Yaml.load(Yaml.java:416) ~[patched_1.16.5.jar:git-Paper-790]
        at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:57) ~[patched_1.16.5.jar:git-Paper-790]
        ... 29 more

I tried to make a pubg plugin but it gave this error

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Also you know Location implements ConfigurationSerializable... there is no need to manually serialize it. In fact, you are losing location resolution the way you do it. Just write/read it directly in config.