Hmm, errors I see in the log.
Host 192.168.2.47 was not connected to because it violates local access rules.
You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at /var/www/html/nextcloud/3rdparty/patchwork/utf8/src/Patchwork/Utf8/Bootup/intl.php#18","userAgent":"Mozilla/5.0 (X11; Linux aarch64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36","version":"20.0.1.1"}
Solution for missing PHP Extension here on the forum and here are instructions on Github. Hope it helps.
I highly recommend migrating your system over to NextcloudPi. Basically gives sane default setup for your device if you are into it. Telegram: Contact @nextcloudpi