Program: 80839
Project: 80839
Buggy source:
private void update(ProxiedPlayer player,ConnectedPlayer connectedPlayer){
  PlayerTablistHandler tablistHandler=connectedPlayer.getPlayerTablistHandler();
  try {
    if (connectedPlayer.getCustomTablist() != null) {
      tablistHandler.setTablistProvider((TablistProvider)connectedPlayer.getCustomTablist());
    }
 else {
      TablistProvider tablistProvider=tablistHandler.getTablistProvider();
      Server server=player.getServer();
      if (server != null && !(BungeeTabListPlus.getInstance().excludedServers.contains(server.getInfo().getName()))) {
        Context context=new Context().put(Context.KEY_VIEWER,connectedPlayer);
        Config config=BungeeTabListPlus.getInstance().getTabListManager().getNewConfigForContext(context);
        if (config != null && (!(tablistProvider instanceof ConfigTablistProvider) || ((ConfigTablistProvider)tablistProvider).config != config)) {
          tablistHandler.setTablistProvider(createTablistProvider(context,config));
          tablistProvider=tablistHandler.getTablistProvider();
        }
 else         if (config == null && tablistProvider instanceof ConfigTablistProvider) {
          tablistHandler.setTablistProvider(tablistProvider=DefaultTablistProvider.INSTANCE);
        }
      }
 else {
        tablistHandler.setTablistProvider(tablistProvider=DefaultTablistProvider.INSTANCE);
      }
      if (tablistProvider instanceof ConfigTablistProvider) {
        ((ConfigTablistProvider)tablistProvider).update();
      }
    }
  }
 catch (  Throwable th) {
    BungeeTabListPlus.getInstance().getLogger().log(Level.SEVERE,"String_Node_Str",th);
  }
}

Fixed version (ground truth):
private void update(ProxiedPlayer player,ConnectedPlayer connectedPlayer){
  PlayerTablistHandler tablistHandler=connectedPlayer.getPlayerTablistHandler();
  if (tablistHandler == null) {
    return;
  }
  try {
    if (connectedPlayer.getCustomTablist() != null) {
      tablistHandler.setTablistProvider((TablistProvider)connectedPlayer.getCustomTablist());
    }
 else {
      TablistProvider tablistProvider=tablistHandler.getTablistProvider();
      Server server=player.getServer();
      if (server != null && !(BungeeTabListPlus.getInstance().excludedServers.contains(server.getInfo().getName()))) {
        Context context=new Context().put(Context.KEY_VIEWER,connectedPlayer);
        Config config=BungeeTabListPlus.getInstance().getTabListManager().getNewConfigForContext(context);
        if (config != null && (!(tablistProvider instanceof ConfigTablistProvider) || ((ConfigTablistProvider)tablistProvider).config != config)) {
          tablistHandler.setTablistProvider(createTablistProvider(context,config));
          tablistProvider=tablistHandler.getTablistProvider();
        }
 else         if (config == null && tablistProvider instanceof ConfigTablistProvider) {
          tablistHandler.setTablistProvider(tablistProvider=DefaultTablistProvider.INSTANCE);
        }
      }
 else {
        tablistHandler.setTablistProvider(tablistProvider=DefaultTablistProvider.INSTANCE);
      }
      if (tablistProvider instanceof ConfigTablistProvider) {
        ((ConfigTablistProvider)tablistProvider).update();
      }
    }
  }
 catch (  Throwable th) {
    BungeeTabListPlus.getInstance().getLogger().log(Level.SEVERE,"String_Node_Str",th);
  }
}