Linux mariadb doesn't start after upgrading to Debian 10

Mariadb version is 10.3. After upgrading there were errors within service starting:

status
Process: 1232 ExecStartPost=/etc/mysql/debian-start (code=exited, status=203/EXEC)

journal -xe
mariadb.service: Failed at step EXEC spawning /etc/mysql/debian-start: No such file or directory

resolving
https://stackoverflow.com/questions/51317209/mariadb-10-3-8-installation-from-mariadb-repo-missing-files

apt install --reinstall -o Dpkg::Options::="--force-confmiss" mariadb-server-10.3

Configuration file '/etc/mysql/debian-start', does not exist on system.

Installing new config file as you requested.

Configuration file '/etc/mysql/mariadb.conf.d/50-mysqld_safe.cnf', does not exist on system.

Installing new config file as you requested.

Configuration file '/etc/mysql/mariadb.conf.d/50-server.cnf', does not exist on system.

Installing new config file as you requested.

apt install --reinstall -o Dpkg::Options::="--force-confmiss" mysql-common

Configuration file '/etc/mysql/my.cnf', does not exist on system.

Installing new config file as you requested.

Afterwards, there were added requested files.

226 error in LXC container

lxc config set container1 security.nesting true