Only one single user, but I receive: This community release of Nextcloud is unsupported and instant notifications are unavailable

Hi, can anyone help? I am using nextcloud on my own server just for me and since I updated to 27.0.0. I receive the above mentioned warning. I could ignore the message, but I do not understand why it appears. Thank you.

See Change wrong info - This community release of Nextcloud is unsupported and push notifications are limited. · Issue #37322 · nextcloud/server · GitHub