请高手看看：这个程序怎样改动

把程序发到网上，电击后显示：
Microsoft JET Database Engine 错误 '80004005'
字段 'love_club.aa' 不能是零长度的字符串。
club_main.asp，行 133
部分程序：
If rs.eof Then exit For                                                   
Next
%>
</table>
<%
rs.close
set rs=nothing
END IF
%>
</body>
</html>
<%
    dim title,picurl,content,manage,manage2,manage3
If request("submitok")="add" then'添加大类
    if request.form("title")="" then
        closeconn
        call msg("请输入俱乐部名称！","-1")
    elseif request.form("picurl")="" then
        closeconn
        call msg("请输入图片文件名及路径！","-1")
    elseif request.form("content")="" then
        closeconn
        call msg("请输入俱乐部简介！","-1")
    end if
    title=trim(replace(request.form("title"),"'","''"))
    picurl=trim(replace(request.form("picurl"),"'","''"))
    content=trim(replace(request.form("content"),"'","''"))
    manage=trim(replace(request.form("manage"),"'","''"))
    manage2=trim(replace(request.form("manage2"),"'","''"))
    manage3=trim(replace(request.form("manage3"),"'","''"))
    aa=trim(replace(request.form("aa"),"'","''"))
    bb=trim(replace(request.form("bb"),"'","''"))
    sql="insert into love_club(title,picurl,content,manage,manage2,manage3,aa,bb) values ('"&title&"','"&picurl&"','"&content&"','"&manage&"','"&manage2&"','"&manage3&"','"&aa&"','"&bb&"')"
    conn.execute sql （这句是133）
    response.redirect "club_main.asp?page="&request("page")