I tried load page 'TabTemplate2.aspx' directly. No error message.
<body>
<table id="GridSpInventory" idField="id" class="easyui-datagrid"
data-options="
url: 'getJobs.aspx', /* present json file format */
rownumbers: false,
method: 'post',
striped: true,
pagination: true,
fit: true,
singleSelect: true
">
<thead>
<tr>
<th data-options="field:'custId',hidden:true">CUSTID</th>
<th data-options="field:'vid',hidden:true">VID</th>
<th data-options="field:'id',hidden:true" width="5%"><b>ID</b></th>
<th data-options="field:'jobNumber',align:'left',resizable:true" width="10%"><b>Job Number</b></th>
<th data-options="field:'created',align:'left',resizable:true" width="15%"><b>Date</b></th>
<th data-options="field:'brand',align:'left',resizable:true" width="10%"><b>Brand</b></th>
<th data-options="field:'regNumber',align:'left',resizable:true" width="15%"><b>License Number</b></th>
<th data-options="field:'customerName',align:'left',resizable:true" width="20%"><b>Customer</b></th>
<th data-options="field:'jobStatus',align:'left',resizable:true" width="10%"><b>Status</b></th>
<th data-options="field:'creatorName',align:'left',resizable:true" width="10%"><b>Creator</b></th>
</tr>
</thead>
</table>
</body>