Fix SettingsChangedListener error message

src/de/steamwar/bungeecore/listeners/SettingsChangedListener.java

@@ -19,7 +19,9 @@
 
 package de.steamwar.bungeecore.listeners;
 
+import de.steamwar.bungeecore.BungeeCore;
 import de.steamwar.bungeecore.sql.SteamwarUser;
+import net.md_5.bungee.BungeeCord;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 import net.md_5.bungee.api.event.SettingsChangedEvent;
 import net.md_5.bungee.event.EventHandler;
@@ -30,7 +32,9 @@ public class SettingsChangedListener extends BasicListener {
 
     @EventHandler
     public void onSettingsChanged(SettingsChangedEvent event) {
+        BungeeCord.getInstance().getScheduler().runAsync(BungeeCore.get(), () -> {
             ProxiedPlayer player = event.getPlayer();
             SteamwarUser.get(player).setLocale(Objects.requireNonNull(player.getLocale()), false);
+        });
     }
 }