Display at least the title when there is no custom filters

app/Template/custom_filter/index.php

@@ -1,4 +1,3 @@
-<?php if (! empty($custom_filters)): ?>
 <div class="page-header">
     <h2><?= t('Custom filters') ?></h2>
     <ul>
@@ -7,7 +6,8 @@
         </li>
     </ul>
 </div>
-<table class="table-striped table-scrolling">
+<?php if (! empty($custom_filters)): ?>
+    <table class="table-striped table-scrolling">
         <tr>
             <th class="column-15"><?= t('Name') ?></th>
             <th class="column-30"><?= t('Filter') ?></th>
@@ -16,7 +16,7 @@
             <th class="column-25"><?= t('Owner') ?></th>
             <th class="column-5"><?= t('Actions') ?></th>
         </tr>
-<?php foreach ($custom_filters as $filter): ?>
+    <?php foreach ($custom_filters as $filter): ?>
          <tr>
             <td><?= $this->text->e($filter['name']) ?></td>
             <td><?= $this->text->e($filter['filter']) ?></td>
@@ -47,7 +47,9 @@
                 <?php endif ?>
             </td>
         </tr>
-<?php endforeach ?>
+    <?php endforeach ?>
-</table>
+    </table>
+<?php else: ?>
+    <p class="alert"><?= t('There is no custom filter.') ?></p>
 <?php endif ?>