The table must contain row sections in order of header, body

Question

<div class="pull-left info">

<p><%= Session["Login_Name"].ToString() %></p>

<a href="#"><i class="fa fa-circle text-success"></i>Online</a>

</div>

 

 actually i was creating sub header i fridview but, it doesn't run it shows error again and again 

 

 it shows error here like The table must contain row sections in order of header, body, then footer. plz help me found out the solution