With larger installation that have a larger volume of users and data, it may be beneficial to update NC using the CLI utility.
Use sudo to invoke the upgrader as the www-data user and follow the prompts.
sudo -u www-data php /var/www/nextcloud/updater/updater.pharWhen upgrading to v28, the upgrade process error out with the following:
Class OCA\\GroupFolders\\Helper\\LazyFolder contains 2 abstract methods and must therefore be declared abstract or implement the remaining methods ...I was able to disable Group Folders from the CLI
sudo -u www-data php occ app:disable groupfolders