Virtualmin mysql policy requirement issue

When I try to create a new account, I get this error from virtualmin account creation time.

Creating MySQL login …
… MySQL database failed! : SQL insert into user (host, user, ssl_type, ssl_cipher, x509_issuer, x509_subject, plugin, authentication_string) values (‘localhost’, ‘newsite’, ‘’, ‘’, ‘’, ‘’, ‘mysql_native_password’, password(‘FrezN7pA404UqdAF’)) failed : Your password does not satisfy the current policy requirements at …/ line 1427.

How can I configure virtualmin to generate a secure password having special characters also?

This issue is happening in Ubuntu 16.04 LTS having Mysql server 5.7.18