Fix issue where the user login on an action might be empty

resources/views/components/moderator-actions.blade.php

@@ -27,7 +27,11 @@
                         </code>
                     </td>
                 @endif
-                <td class="px-4 py-2 border">{{ $action->user->login }}</td>
+                <td class="px-4 py-2 border">
+                    @if (!empty($action->user))
+                        {{ $action->user->login }}
+                    @endif
+                </td>
                 @if ($showChannel)
                     @php
                         $channel = $action->channel->username();