Unable to access my instance

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1

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I am getting this error when I try to access my instance on my rpi.
The only thing is, I am not sure which file it is that I need to update:
/var/www/html/nextcloud/data/updater-ocr0cuv6mub8/backups/nextcloud-16.0.5.1/apps/files_external/lib/config.php
/var/www/html/nextcloud/data/updater-ocr0cuv6mub8/backups/nextcloud-16.0.5.1/config/config.php
/var/www/html/nextcloud/data/updater-ocr0cuv6mub8/backups/nextcloud-16.0.3.0/apps/files_external/lib/config.php
/var/www/html/nextcloud/data/updater-ocr0cuv6mub8/backups/nextcloud-16.0.3.0/config/config.php
/var/www/html/nextcloud/data/updater-ocr0cuv6mub8/backups/nextcloud-17.0.1.1/apps/files_external/lib/config.php
/var/www/html/nextcloud/data/updater-ocr0cuv6mub8/backups/nextcloud-17.0.1.1/config/config.php
/var/www/html/nextcloud/apps/files_external/lib/config.php
/var/www/html/nextcloud/config/config.php
/home/pi/nextcloud/apps/files_external/lib/config.php

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https://docs.nextcloud.com/server/18/admin_manual/configuration_server/config_sample_php_parameters.html