mysqli issue

getCurrentAttempt.php

public function getCurrentAttempt($mysqli){
    include_once('global/objects/objectQuizAttempt.php');
    //error_log("QUIZ INSTANCE ID: " . $this->getID());
    $stmt = $mysqli->prepare("SELECT `ID` FROM `Quiz Attempts` WHERE `Quiz Instance ID` = ? ORDER BY `ID` DESC LIMIT 1");
    $stmt->bind_param('s',$this->getID());
    $stmt->execute();
    $stmt->bind_result($attemptID);
    $stmt->fetch();
    $stmt->close();
    error_log("QUIZ INSTANCE ID " . $this->getID() . " ATTEMPT ID: " . $attemptID);
    return new objectQuizAttempt($attemptID);
  }
//error logs "QUIZ INSTANCE ID 129 ATTEMPT ID: 0"
//when i run the sql in the db with instance id of 129 i get `ID` 110