Make phpmyadmin work using Ubuntu 18.04

Make phpmyadmin work using Ubuntu 18.04. Apache is installed and is working. Mysql is installed and working. Only problem is that phpmyadmin is not accesable through localhost/phpmyadmin the program is installed latest version. Solution is probably to adjust some configuration files but I do not know how. The problem occurred after upgrading from ubunu 16.04 to 18.04.