Program: 80887
Project: 80887
Buggy source:
private void update(PlayerTablistHandler tablistHandler){
  try {
    if (tablistHandler.getPlayer().getServer() != null) {
      if (BungeeTabListPlus.getInstance().getConfigManager().getMainConfig().excludeServers.contains(tablistHandler.getPlayer().getServer().getInfo().getName()) || tablistHandler.isExcluded()) {
        tablistHandler.unload();
        return;
      }
    }
    TabListProvider tlp=BungeeTabListPlus.getInstance().getTabListManager().getTabListForPlayer(tablistHandler.getPlayer());
    if (tlp == null) {
      tablistHandler.exclude();
      tablistHandler.unload();
      return;
    }
    TabList tabList;
    if (BungeeTabListPlus.getInstance().getProtocolVersionProvider().getProtocolVersion(tablistHandler.getPlayer()) >= 47) {
      int whishedTabListSize=tlp.getWhishedTabListSize();
      if (whishedTabListSize < 1) {
        whishedTabListSize=1;
      }
      if (whishedTabListSize > 80) {
        whishedTabListSize=80;
      }
      int columns=(whishedTabListSize + 19) / 20;
      tabList=new GenericTabList(whishedTabListSize / columns,columns);
    }
 else {
      tabList=new GenericTabList();
    }
    TabListContext context=new GenericTabListContext(tabList.getRows(),tabList.getColumns(),tablistHandler.getPlayer(),BungeeTabListPlus.getInstance().constructPlayerManager(tablistHandler.getPlayer()));
    context=context.setPlayer(BungeeTabListPlus.getInstance().getBungeePlayerProvider().wrapPlayer(context.getViewer()));
    tlp.fillTabList(tablistHandler.getPlayer(),tabList,context);
    tablistHandler.sendTablist(tabList);
  }
 catch (  Throwable th) {
    try {
      BungeeTabListPlus.getInstance().getLogger().log(th instanceof LayoutException ? Level.WARNING : Level.SEVERE,"String_Node_Str",th);
      TabList tabList;
      if (BungeeTabListPlus.getInstance().getProtocolVersionProvider().getProtocolVersion(tablistHandler.getPlayer()) >= 47) {
        tabList=new GenericTabList(20,4);
      }
 else {
        tabList=new GenericTabList();
      }
      ErrorTabListProvider.constructErrorTabList(tablistHandler.getPlayer(),tabList,"String_Node_Str",th);
      tablistHandler.sendTablist(tabList);
    }
 catch (    Throwable th2) {
      BungeeTabListPlus.getInstance().getLogger().log(Level.SEVERE,"String_Node_Str",th2);
    }
  }
}

Fixed version (ground truth):
private void update(PlayerTablistHandler tablistHandler){
  try {
    if (tablistHandler.getPlayer().getServer() != null) {
      if (BungeeTabListPlus.getInstance().getConfigManager().getMainConfig().excludeServers.contains(tablistHandler.getPlayer().getServer().getInfo().getName()) || tablistHandler.isExcluded()) {
        tablistHandler.unload();
        return;
      }
    }
    TabListProvider tlp=BungeeTabListPlus.getInstance().getTabListManager().getTabListForPlayer(tablistHandler.getPlayer());
    if (tlp == null) {
      tablistHandler.exclude();
      tablistHandler.unload();
      return;
    }
    TabList tabList;
    if (BungeeTabListPlus.getInstance().getProtocolVersionProvider().getProtocolVersion(tablistHandler.getPlayer()) >= 47) {
      int wishedTabListSize=tlp.getWishedTabListSize();
      if (wishedTabListSize < 1) {
        wishedTabListSize=1;
      }
      if (wishedTabListSize > 80) {
        wishedTabListSize=80;
      }
      int columns=(wishedTabListSize + 19) / 20;
      tabList=new GenericTabList(wishedTabListSize / columns,columns);
    }
 else {
      tabList=new GenericTabList();
    }
    TabListContext context=new GenericTabListContext(tabList.getRows(),tabList.getColumns(),tablistHandler.getPlayer(),BungeeTabListPlus.getInstance().constructPlayerManager(tablistHandler.getPlayer()));
    context=context.setPlayer(BungeeTabListPlus.getInstance().getBungeePlayerProvider().wrapPlayer(context.getViewer()));
    tlp.fillTabList(tablistHandler.getPlayer(),tabList,context);
    tablistHandler.sendTablist(tabList);
  }
 catch (  Throwable th) {
    try {
      BungeeTabListPlus.getInstance().getLogger().log(th instanceof LayoutException ? Level.WARNING : Level.SEVERE,"String_Node_Str",th);
      TabList tabList;
      if (BungeeTabListPlus.getInstance().getProtocolVersionProvider().getProtocolVersion(tablistHandler.getPlayer()) >= 47) {
        tabList=new GenericTabList(20,4);
      }
 else {
        tabList=new GenericTabList();
      }
      ErrorTabListProvider.constructErrorTabList(tablistHandler.getPlayer(),tabList,"String_Node_Str",th);
      tablistHandler.sendTablist(tabList);
    }
 catch (    Throwable th2) {
      BungeeTabListPlus.getInstance().getLogger().log(Level.SEVERE,"String_Node_Str",th2);
    }
  }
}