fix(sync): 添加部分延迟以保障数据完成同步。

Author: CarmJos

README.md

@@ -107,7 +107,7 @@
 
 若您觉得本插件做的不错，您可以捐赠支持我，感谢您成为开源项目的支持者！
 
-万分感谢 [egg_拿]() 赞助本项目的开发与维护！
+万分感谢 [egg_拿]() 与 [ayoiz](https://github.com/ayoi2) 赞助本项目的开发与维护！
 
 Many thanks to Jetbrains for kindly providing a license for me to work on this and other open-source projects.  
 [![](https://resources.jetbrains.com/storage/products/company/brand/logos/jb_beam.svg)](https://www.jetbrains.com/?from=https://github.com/CarmJos/UserPrefix)

pom.xml

@@ -18,7 +18,7 @@
 
     <groupId>cc.carm.plugin</groupId>
     <artifactId>timereward</artifactId>
-    <version>3.1.2</version>
+    <version>3.1.3</version>
 
     <name>TimeReward</name>
     <description>在线时长自动领奖插件，通过指令发放奖励，基于EasyPlugin实现。</description>

src/main/java/cc/carm/plugin/timereward/listener/UserListener.java

@@ -2,26 +2,32 @@
 
 import cc.carm.plugin.timereward.Main;
 import cc.carm.plugin.timereward.TimeRewardAPI;
-import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
+import org.jetbrains.annotations.Nullable;
 
 public class UserListener implements Listener {
 
     @EventHandler
     public void onJoin(PlayerJoinEvent event) {
-        TimeRewardAPI.getUserManager().load(event.getPlayer().getUniqueId(), true).thenAccept(data -> {
-            Player player = Bukkit.getPlayer(data.getUserUUID());
-            if (player == null || !player.isOnline()) {
-                TimeRewardAPI.getUserManager().unload(data.getUserUUID());
-            } // 不在线自动卸载
-        }).exceptionally(ex -> {
-            Main.severe("加载用户在线时长数据失败: " + event.getPlayer().getName());
-            ex.printStackTrace();
-            return null;
+        @Nullable Player player = event.getPlayer();
+        // Delayed load to avoid async error
+        Main.getInstance().getScheduler().runLater(20L, () -> {
+            if (player == null || !player.isOnline()) return;
+            TimeRewardAPI.getUserManager()
+                    .load(event.getPlayer().getUniqueId(), true)
+                    .thenAccept(data -> {
+                        if (!player.isOnline()) {  // 不在线自动卸载
+                            TimeRewardAPI.getUserManager().unload(data.getUserUUID(), false);
+                        }
+                    }).exceptionally(ex -> {
+                        Main.severe("加载用户在线时长数据失败: " + event.getPlayer().getName());
+                        ex.printStackTrace();
+                        return null;
+                    });
         });
     }