<div th:object="${AppPortModel.Status}" th:if="${AppPortModel.Status == 'CRITICAL'}">
<h3>
MONITORING
</h3>

<table id ="apCritTable">
    <thead>
    <tr>
        <th> Status </th>
        <th> HostName </th>
        <th> Port Name</th>
        <th> Port Listening Count </th>
    </tr>
    </thead>
    <tbody>
    <tr th:each="AppPortModel, iterStat : ${showap}" th:if="${AppPortModel.Status == 'CRITICAL'}">
        <td th:text ="${AppPortModel.Status}"></td>
         <td th:text="${AppPortModel.host}">${AppPortModel.host}</td>
        <td th:text="${AppPortModel.portOwner}"></td>
         <td th:text="${AppPortModel.count}"></td>
    </tr>
    </tbody>
</table>
</div>

<div th:object="${AppPortModel.Status}" th:if="${AppPortModel.Status == 'CRITICAL'}">

org.springframework.expression.spel.SpelEvaluationException: EL1007E:(pos 0): Property or field 'Status' cannot be found on null