Previous upgrade (successfull) was mariadb 10.1.38 (16.05.2019) I have now upgraded Debian from Stretch to Buster (and MariaDB-server 10.3). It solved my problem
-- С уважением, Воробьев Александр Создание и поддержка сайтов https://va-soft.ru/ 10.09.2019, 16:31, "Otto Kekäläinen" <o...@debian.org>: > Control: tags -1 moreinfo > > Hello! > > What version were you upgrading from? > > Our testing pipeline includes upgrade testing and such an error is not > visible in our tests > (https://salsa.debian.org/mariadb-team/mariadb-10.1/pipelines/67361). > > Please describe what your system looks like or if you can give us > steps on how to reproduce this it would be even better.