gambar tak tampil , pada dinamis sliders bootstrap ??

gan saya mau nanya, kodingan saya salah dimana ya sehingga gambar tidak muncul pada browser? soalnya tidak ada teks error. terima kasih :)

 <div id="dmbannerhead" class="carousel slide" data-ride="carousel">
       <div class="carousel-inner">

 <?php
   $sql = "select * from tm_iklan id_stat_iklan = 1";
   if (mysqli_num_rows($result) > 0) {
   $stat_iklan = 0;
   while ($row = mysqli_fetch_assoc($result)){
	  if($stat_iklan==0) $aktif = "active";
      else $aktif = '';
  ?>
        <div class="item <?php echo $aktif ?>">
		      <img class="img-responsive course-img" src="http://webmin.kukode.com/upload_galeri/'. $row['fl_photo'] . '" alt="<?php echo $row['judul'] ?>" title="<?php echo $row['judul'] ?>">
		  </div>
  <?php
      $stat_iklan++;
    } // tutup while
  }	// tutup if
   ?>
     </div>

	 <a class="left carousel-control" href="#dmbannerhead" data-slide="prev"><span class="glyphicon glyphicon-chevron-left"></span></a>
	 <a class="right carousel-control" href="#dmbannerhead" data-slide="next"><span class="glyphicon glyphicon-chevron-right"></span></a>
   </div>