refactor

src/server/service/attachment.js

@@ -52,13 +52,13 @@ class AttachmentService {
       return;
     }
 
-    fileUploadService.deleteFiles(attachments);
-
     attachments.forEach((attachment) => {
       unorderAttachmentsBulkOp.find({ _id: attachment._id }).remove();
     });
     await unorderAttachmentsBulkOp.execute();
 
+    fileUploadService.deleteFiles(attachments);
+
     return;
   }