#vulnerable code 
                                private void sendMessageToGuild(Guild guild, Player player, String message) {
        for (User user : guild.getMembers()) {
            Player loopedPlayer = this.plugin.getServer().getPlayer(user.getName());
            if (loopedPlayer != null) {
                if (user.getPlayer().equals(player)) {
                    if (!user.isSpy()) {
                        loopedPlayer.sendMessage(message);
                    }
                } else {
                    loopedPlayer.sendMessage(message);
                }
            }
        }
    } 
                            #location 5 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                private void sendMessageToGuild(Guild guild, Player player, String message) {
        for (User user : guild.getOnlineMembers()) {
            Player p = user.getPlayer();
            
            if(!p.equals(player) || !user.isSpy()) {
                p.sendMessage(message);
            }
        }
    }