Quick Edit Error

Hello,

Thanks for the plugin. When trying to ‘Quick Edit’ a comment, the following error appears (but the changes to the comment are still saved):

The link you followed has expired.Please try again.

The following error also appears in the console:

POST http://example.org/wp-admin/admin-ajax.php?_fs_blog_admin=true 403 (Forbidden)

This happens whether or not there is an image attached to the comment. The error does not appear if the plugin is deactivated.

Hope you can help and please do let me know if you need any further information.
Thanks