John's ownCloud blog

If you are getting lots of file errors, probably the local copy and the server copy are confused. Rescan.   sudo - u www - data php occ files : scan

If the occ owncloud command line throws exceptions it could be that you are missing php-pdo-sqlite on your machine.  sudo apt-get install php7.4-cli php7.4-fpm php7.4-bcmath php7.4-curl php7.4-gd php7.4-intl php7.4-json php7.4-mbstring php7.4-mysql php7.4-opcache php7.4-sqlite3 php7.4-xml php7.4-zip