mariadb-dumpslow: Can't determine datadir from 'my_print_defaults instances' output

# mariadb-dumpslow

Can't determine datadir from 'my_print_defaults instances' output: --socket=/run/mysqld/mysqld.sock

--pid-file=/run/mysqld/mysqld.pid

--basedir=/usr

--bind-address=127.0.0.1

--expire_logs_days=10

--default-storage-engine=myisam

--default-time-zone=+00:00

--key-buffer-size=8G

--max-heap-table-size=8G

--query-cache-size=0

--sql-mode=ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

--log_slow_query_file=/var/log/mysql/mariadb-slow.log

--log_slow_query_time=5

--log_slow_verbosity=all

--log_slow_query