#vulnerable code 
                                private void sendMessageToGuild(Guild guild, Player player, String message) {
        if (guild == null || player == null || !player.isOnline()) {
            return;
        }

        for (User user : guild.getOnlineMembers()) {
            Player p = user.getPlayer();
            
            if (!p.equals(player) || !user.isSpy()) {
                p.sendMessage(message);
            }
        }
    } 
                            #location 9 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                private void sendMessageToGuild(Guild guild, Player player, String message) {
        if (guild == null || player == null || !player.isOnline()) {
            return;
        }

        for (User user : guild.getOnlineMembers()) {
            Player p = user.getPlayer();
            
            if (p == null) {
                return;
            }
            
            if (!p.equals(player) || !user.isSpy()) {
                p.sendMessage(message);
            }
        }
    }