#3315047 - Fix FilesLogController not allowing for null values

src/Controller/FilesLogController.php

@@ -186,9 +186,10 @@ class FilesLogController extends ControllerBase {
         $message .= '...';
       }
       $table['#rows'][] = [
-        $this->getLogLevelLabel($log['severity']),
-        $log['type'],
-        DrupalDateTime::createFromTimestamp($log['timestamp'])->format('Y-m-d H:i:s'),
+        (isset($log['severity']) && is_numeric($log['severity'])) ?
+          $this->getLogLevelLabel($log['severity']) : '',
+        $log['type'] ?? '',
+        DrupalDateTime::createFromTimestamp($log['timestamp'] ?? 0)->format('Y-m-d H:i:s'),
         Markup::create('<a href="' . $url->toString() . '">' . $message . '</a>'),
         Markup::create($user instanceof UserInterface && $user->id() != '0'
           ? '<a href="' . $user->toUrl()->toString() . '">' . $user->label() . '</a>'