Cannot install 12.0.5

When I try to install this happens:

Error while trying to create admin user: Failed to connect to the database: An exception occured in driver: SQLSTATE[HY000] [1044] Access denied for user ‘oc_Andrey’@’%’ to database ‘nextcloud’

I just filled in the config files myself…it does salt and encryption on the password so you have to let it fail the first time then it will work.