Fehlender Index "fs_storage_path_prefix" in der Tabelle "oc_filecache". Fehlender Index "fs_id_storage_size" in der Tabelle "oc_filecache". Fehlender Index "properties_pathonly_index" in der Tabelle "oc_properties". Fehlender Index "job_lastcheck_reserved" in der Tabelle "oc_jobs".
OC\HintException: [0]: Memcache \OC\Memcache\APCu not available for local cache (Is the matching PHP module installed and enabled?)
nano /etc/php/x.x/cli/php.ini -> append "apc.enable_cli = 1" cd /var/www/html/nextcloud
sudo -u www-data php occ db:add-missing-indices
case 3: //$updater->createBackup(); break;
appdata_[your installation id]/end_to_end_encryption/*
mysql> oc_e2e_encryption_lock;
DELETE FROM oc_filecache WHERE path LIKE “%[your old e2e folders]%”;