Error for User while Managing Subscriptions

I noticed a weird error. When a normal user/author manages their comment subscription and they click the “Update subscriptions” button, they get this error:

In order to cancel or suspend one or more notifications, select the corresponding checkbox(es) and click on the button at the end of the list. You are currently subscribed to:

No subscriptions match your search criteria.

But, when I am logged in as an admin and I do the same thing, everything works fine and the subscriptions get updated without errors. How can I fix this or find the root of the problem?

https://wordpress.org/plugins/subscribe-to-comments-reloaded/