ПОСТ 500 jQuery

Question

У меня проблема с jquery, 500 Внутренняя ошибка сервера в консоли

            $.ajax({
                url: 'index.php',
                method: 'POST',
                dataType: 'text',
                data: {
                    addComment: 1,
                    naslov: naslov,
                    kategorija: kategorija,
                    comment: comment,
                    isReply: isReply,
                    commentID: commentID
                }, success: function (response) {

Answer 1

@ Twisty

У меня ошибка $ data = $ sql -> fetch_asso c ();

if (isset($_POST['addComment'])) {
$comment = $conn->real_escape_string($_POST['comment']);
$naslov = $conn->real_escape_string($_POST['naslov']);
$kategorija = $conn->real_escape_string($_POST['kategorija']);
$isReply = $conn->real_escape_string($_POST['isReply']);
$commentID = $conn->real_escape_string($_POST['commentID']);

if ($isReply == 'true') {
   if (isset($_SESSION['doctorID'])) {
    $conn->query("INSERT INTO replies (comment, commentID, doctorID, createdOn) VALUES ('$comment', '$commentID', '".$_SESSION['doctorID']."', NOW())");
    $sql = $conn->query("SELECT replies.id, name, naslov, kategorija, comment, DATE_FORMAT(replies.createdOn, '%d-%m-%y') AS createdOn FROM replies INNER JOIN doctors ON replies.doctorID = doctors.id ORDER BY replies.id DESC LIMIT 1");
    $data = $sql->fetch_assoc();
    $str = 'true';
    exit(KreirajPitanje($data, $str));
  } else {
    echo '<script>Swal.fire({
        title: "Greška!",
        text: "Niste doktor!",
        icon: "error",
        confirmButtonText: "U redu"
         });</script>';
     exit();
}
}
if ($isReply == 'false') {
   if (isset($_SESSION['userID'])) {
    $conn->query("INSERT INTO comments (userID, naslov, kategorija, comment, createdOn) VALUES ('".$_SESSION['userID']."','$naslov','$kategorija','$comment',NOW())");
    $sql = $conn->query("SELECT comments.id, name, naslov, kategorija, comment, DATE_FORMAT(comments.createdOn, '%d-%m-%y') AS createdOn FROM comments INNER JOIN users ON comments.userID = users.id ORDER BY comments.id DESC LIMIT 1");
    $data = $sql->fetch_assoc();
    $str = 'false';
    exit(KreirajPitanje($data, $str));
  } else {
     echo '<script>Swal.fire({
         title: "Greška!",
         text: "Niste se ulogovali/ne mozete to kao doktor!",
         icon: "error",
         confirmButtonText: "U redu"
          });</script>';
     exit();
}

}}