#3315047 - Fix FilesLogController not allowing for null values

src/Controller/FilesLogController.php

@@ -117,15 +117,16 @@ class FilesLogController extends ControllerBase {
   <tr><td colspan="2"><strong>{{ "Message"|t }}:</strong><pre>{{ message }}</pre></td></tr>
 </table>',
       '#context' => [
-        'type' => $log['type'],
-        'severity' => $this->getLogLevelLabel($log['severity']),
+        'type' => $log['type'] ?? '',
+        'severity' => isset($log['severity']) && is_numeric($log['severity'])
+          ? $this->getLogLevelLabel($log['severity']) : '',
         'user' => $user instanceof UserInterface && $user->id() != '0'
           ? '<a href="' . $user->toUrl()->toString() . '">' . $user->label() . '</a>'
           : $this->t('Anonymous (not verified)'),
         'date' => DrupalDateTime::createFromTimestamp($log['timestamp'] ?? 0)->format('Y-m-d H:i:s'),
-        'uri' => $log['request_uri'],
-        'referer' => $log['referer'],
-        'message' => $log['message'],
+        'uri' => $log['request_uri'] ?? '',
+        'referer' => $log['referer'] ?? '',
+        'message' => $log['message'] ?? '',
       ],
     ];
   }