--- a/plugins/filesystem_attachments/filesystem_attachments.php	Wed Oct 08 09:33:13 2025 -0400
+++ b/plugins/filesystem_attachments/filesystem_attachments.php	Wed Oct 15 14:06:01 2025 -0400
@@ -151,7 +151,7 @@
         // $_SESSION['compose']['attachments'] is not a complete record of
         // temporary files because loading a draft or starting a forward copies
         // the file to disk, but does not make an entry in that array
-        if (is_array($_SESSION['plugins']['filesystem_attachments'])) {
+      if (!empty($_SESSION['plugins']) && is_array($_SESSION['plugins']['filesystem_attachments'])) {
             foreach ($_SESSION['plugins']['filesystem_attachments'] as $group => $files) {
                 if ($args['group'] && $args['group'] != $group) {
                     continue;