ngak ketemu error??

<?php
$host ='localhost';
$user ='grupphp';
$pass ='';
$db   ='fb_tutorial';
$pdo = new PDO('mysql:host='.$host.';dbname='.$db, $user, $pass);
// use the connection here
try{
$makan = new MakananTools($pdo);
$makan->InputMakanan('siomay',10000);
$makan->InputMakanan(545,'');
$makan->InputMakanan('unknown 2');
} catch (Exception $e) {

    echo nl2br(print_r($e,1));
}
    class MakananTools {
        private $db;

        public function __construct($pdo) {
            $this->db = $pdo;
        }

        public function InputMakanan($nama_makanan="", $harga_makanan=0) {
            $sql = $this->db->prepare("INSERT INTO tbl_makanan (id_makanan, nama_makanan, harga_makanan) VALUES (UUID(), :nama_makanan, :harga_makanan)");
            $sql->bindParam(':nama_makanan', $nama_makanan, PDO::PARAM_STR);
            $sql->bindParam(':harga_makanan', $harga_makanan);
            $execute = $sql->execute();

            if ($execute) {
                echo '<br/>OK';
                return $execute;
            }
            else {
                echo '<br/>Failed';
                throw new Exception("Error Processing Request", 1);
            }
        }

        public function DaftarDataMakanan() {
            $sql = $this->db->prepare('SELECT * FROM tbl_makanan');
            $sql->execute();
            $fetchAll = $sql->fetchAll();

            return $fetchAll;
        }

        public function GetDataMakananById($id_makanan) {
            $sql = $this->db->prepare('SELECT * FROM tbl_makanan WHERE id_makanan = ?');
            $sql->bindParam(1, $id_makanan);
            $exe = $sql->execute();
            $fetch = $sql->fetch(PDO::FETCH_ASSOC);

            if ($fetch) {
                return $fetch;
            } else {
                throw new Exception("Error Processing Request", 1);
            }
        }

        public function GantiDataMakanan($id_makanan, $nama_makanan, $harga_makanan) {
            $sql = $this->db->prepare('UPDATE tbl_makanan SET nama_makanan = ?, harga_makanan = ? WHERE id_makanan = ?');
            $sql->bindParam(1, $nama_makanan);
            $sql->bindParam(2, $harga_makanan);
            $sql->bindParam(3, $id_makanan);
            $execute = $sql->execute();

            if ($execute) {
                return $execute;
            } else {
                throw new Exception("Error Processing Request", 1);
            }
        }

        public function HapusDataMakanan($id_makanan) {
            $sql = $this->db->prepare('DELETE FROM tbl_makanan WHERE id_makanan = ?');
            $sql->bindParam(1, $id_makanan);
            $execute = $sql->execute();

            if ($execute) {
                return $execute;
            } else {
                throw new Exception("Error Processing Request", 1);

            }
        }

        public function HashId($id) {
            $a = base64_encode($id);

            return $a;
        }
    }