E: Пакет 'libmysqlclient18' не имеет никакого кандидата установки

Я устанавливаю mysql на Ubuntu 16.04 после https://dev.mysql.com/doc/mysql-apt-repo-quick-guide/en/#apt-repo-fresh-install

установите общие клиентские библиотеки:

 shell> sudo apt-get install libmysqlclient18

$ sudo apt-get install libmysqlclient18
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package libmysqlclient18 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'libmysqlclient18' has no installation candidate

Как я решу ошибку?Спасибо.