Update stuff

src/de/steamwar/bungeecore/listeners/mods/Fabric.java

@@ -59,6 +59,9 @@ public class Fabric extends BasicListener {
 
         BungeeCord.getInstance().getScheduler().schedule(BungeeCore.get(), () -> {
             for (Map.Entry<ProxiedPlayer, Long> entry : expectPluginMessage.entrySet()) {
+                if (!BungeeCord.getInstance().getPlayers().contains(entry.getKey())) {
+                    continue;
+                }
                 if (System.currentTimeMillis() - entry.getValue() > TimeUnit.SECONDS.toMillis(20)) {
                     banPlayer(SteamwarUser.get(entry.getKey()), entry.getKey());
                     return;