As some of you may know, MediaWiki have just released a beta version of MediaWiki 1.39, stated here (https://lists.wikimedia.org/hyperkitty/list/mediawiki-announce@lists.wikimedia.org/thread/JNZN7HKHOUU52NTLPOGFFFGGGFLJTA4F/ ). However, as shown in the release notes (https://gerrit.wikimedia.org/g/mediawiki/core/+/REL1_39/RELEASE-NOTES-1.39), the requirements of the version of the database MariaDB have changed - MediaWiki 1.39 now requires the version of MariaDB to be10.3 or higher.

I hope sysadmins here can launch an upgrade of MariaDB to version 10.3, before the stable release of MediaWiki 1.39, thanks.