fresh install invalid username and password

[global.da]

hi,

hope you can help me with the admin login issue

i install wampserver
edit php.ini based on the recommended settings pre-install check
php 7.3.12

copy repository to c:\wamp64\www
run wampserver and install corebos http://localhost/corebos8/install.php

the only error is unable to connect to database server. invalid mySQL connection parameters specified
Database UTF-8 support Not Enabled

then i browse http://localhost/corebos8/ it goes to the login page
i enter admin and the password admin
the error is you must specify a valid username and password

what did i missed?