Have to address 'red' checks.
First line says to edit config.php and change dbtype line from mysql to mariadb.
You are using MariaDB. No restart of server services needed.
The second is a php extension ... php_intl ... that you should be able to
acquire via package manager of operating system which is Ubuntu 18.04.
https://zoomadmin.com/HowToInstall/UbuntuPackage/php-intl
The 'orange' checks are recommended.
Installing new php extension should require restart of web service so that it is aware of the new php extensions.
'SoS', Ken
Plugin enrol_imsenterprise is missing a version.php file from code directory.
And am guessing the second error result of the first.
Site not in maintenance mode as recommended before update/upgrade and right
now anyone browsing to your site is thrown into plugins check ... no login
required.
The check gets down to workshop ... standard core plugins ... but then
shows Assignment/Submisson plugins - standard core to be installed.
Ditto for certain plugin on the rest of the check.
That means upgrade failed.
Probably best to restore the backup of code and SQL dump of DB for moodle to get the site back to whatever version it was prior to attempting whatever.
'SoS', Ken
