fix: lock.lock();

build-number.txt

@@ -1 +1 @@
-1234
+1235

src/main/java/me/chayapak1/chomens_bot/plugins/PlayersPersistentDataPlugin.java

@@ -86,6 +86,8 @@ public class PlayersPersistentDataPlugin extends PlayersPlugin.Listener {
     public void playerLeft(PlayerEntry target) {
         bot.executorService.submit(() -> {
             try {
+                lock.lock();
+
                 if (!playersObject.has(getName(target))) return;
 
                 final ObjectNode player = (ObjectNode) playersObject.get(getName(target));