SSL 적용후 오류가 발생되네요.

SSL 서버만 적용한 상태입니다.

https:// 로 접속 후 상단에 "마이페이지" 주문조회" 클릭시 에러가 발생됩니다.

https://www.snfmarket.co.kr/">https://www.snfmarket.co.kr/

하지만

http만으로 접속하면 적상적으로 되는데 이유가 뭘까요?

https://www.snfmarket.co.kr/">http://www.snfmarket.co.kr/

소스는 아래와 같습니다.

   <?php if ($is_member) { ?>
   <?php if ($is_admin) {  ?>
   <li><a href="<?php echo G5_ADMIN_URL; ?>/shop_admin/" target="_blank">관리자</a></li>
   <?php }  ?>
   <li><a href="<?php echo G5_BBS_URL; ?>/member_confirm.php?url=register_form.php">정보수정</a></li>
   <li><a href="<?php echo G5_BBS_URL; ?>/logout.php?url=shop">로그아웃</a></li>
   <?php } else { ?>
   <li><a href="<?php echo G5_BBS_URL; ?>/login.php?url=<?php echo $urlencode; ?>">로그인</a></li>
   <li><a href="<?php echo G5_BBS_URL; ?>/register.php">회원가입</a></li>    
   <?php } ?>
   <li><a href="<?php echo G5_SHOP_URL; ?>/mypage.php"><i class="fa fa-user-circle" aria-hidden="true"></i> 마이페이지</a></li>
   <?
    $cart_count = sql_fetch(" select count(*) as cnt from {$g5['g5_shop_cart_table']} where od_id = '".get_session('ss_cart_id')."' ");
       $cart_count_num = $cart_count['cnt'];
    $wish_count = sql_fetch(" select count(*) as cnt from {$g5['g5_shop_wish_table']} a, {$g5['g5_shop_item_table']} b where a.mb_id = '{$member['mb_id']}' and a.it_id  = b.it_id ");
    $wish_count_num = $wish_count['cnt'];
   ?>
   <li><a href="<?php echo G5_SHOP_URL; ?>/cart.php"><i class="fa fa-shopping-basket" aria-hidden="true"></i> 장바구니 <strong><?=$cart_count_num;?></strong></a></li>   
   <li><a href="<?php echo G5_SHOP_URL; ?>/orderinquiry.php"><i class="fa fa-file-text" aria-hidden="true"></i> 주문조회</a></li>
   <li><a href="<?php echo G5_SHOP_URL; ?>/personalpay.php"><i class="fa fa-credit-card" aria-hidden="true"></i> 개인결제</a></li>
   <li><a href="<?php echo G5_BBS_URL; ?>/board.php?bo_table=notice">고객센터</a></li>
  </ul>