#vulnerable code 
                                public static int getPing(Player player) {
        int ping = 0;

        if (player == null) {
            return ping;
        }

        try {
            Class<?> craftPlayer = Reflections.getCraftBukkitClass("entity.CraftPlayer");
            Object cp = craftPlayer.cast(player);
            Object handle = craftPlayer.getMethod("getHandle").invoke(cp);
            ping = (int) handle.getClass().getField("ping").get(handle);
        } catch (Exception e) {
            if (FunnyGuildsLogger.exception(e.getCause())) {
                e.printStackTrace();
            }
        }

        return ping;
    } 
                            #location 10 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                public static int getPing(Player player) {
        int ping = 0;

        if (player == null) {
            return ping;
        }

        try {
            Object cp = craftPlayerClass.cast(player);
            Object handle = getHandleMethod.invoke(cp);
            ping = (int) pingField.get(handle);
        }
        catch (Exception e) {
            if (FunnyGuildsLogger.exception(e.getCause())) {
                e.printStackTrace();
            }
        }

        return ping;
    }