Thinkphp中用sql语句插入数据时,虽然成功插入但是报错

public function GetToMysql($user,$password,$emile){
        $password = $this->encryptPwd($password);
        $query = "insert into user (username,password,email) values ('{$user}','{$password}','{$emile}')";
        $data = new \Think\Model();
        public