The problem was default-character-set setting in mysqld section of my mysql configuration file:
[mysqld] default-character-set=utf8
Due to upstream changes in MySQL it should be replaced with character-set-server setting:
[mysqld] character-set-server=utf8
The problem was default- character- set setting in mysqld section of my mysql configuration file:
[mysqld] character- set=utf8
default-
Due to upstream changes in MySQL it should be replaced with character- set-server setting:
[mysqld] set-server= utf8
character-