error running shared postrotate script for /var/log/mysql.log

Error message:

error: error running shared postrotate script for /var/log/mysql.log /var/log/mysql/mysql.log /var/log/mysql/mysql-slow.log
run-parts: /etc/cron.daily/logrotate exited with return code 1

How to resolve a problem:

# vim /etc/mysql/debian.cnf

user = debian-sys-maint

password = PASSWORD

# mysql -u root -p

mysql> GRANT ALL PRIVILEGES ON *.* TO 'debian-sys-maint'@'localhost' IDENTIFIED BY 'PASSWORD';

mysql> FLUSH PRIVILEGES;

mysql> exit