회원가입 필드 추가 후 회원 정보 수정 페이지 에러

<div class="tbl_frm01 tbl_wrap">        <table>        <caption>추가정보 입력</caption>        <tbody>  <tr>   <th scope="row"><label for="mb_1">학번</strong></label></th>    <td>    <span class="frm_info">Ex)15</span>    <input type="text" name="mb_1" value="<?php echo $member['mb_1'] ?>" id="mb_1" required class="frm_input" size="8">    </td>         </tr>        <?php }  ?>  <tr>   <th scope="row"><label for="mb_2">학과</strong></label></th>    <td>    <input type="text" name="mb_2" value="<?php echo $member['mb_2'] ?>" id="mb_2" required class="frm_input" size="20">    </td>         </tr>        <tr>   <th scope="row"><label for="mb_3">생일</strong></label></th>    <td>    <span class="frm_info">Ex)961127</span>    <input type="text" name="mb_3" value="<?php echo $member['mb_3'] ?>" id="mb_3" required class="frm_input" size="8">    </td>         </tr>    <tr>   <th scope="row"><label for="mb_4">포지션</strong></label></th>    <td>    <span class="frm_info">결정되었을 시 입력하세요.</span>    <input type="text" name="mb_4" value="<?php echo $member['mb_4'] ?>" id="mb_4" class="frm_input" size="20">    </td>         </tr>  </tbody>  </table>