Hi everyone, I trid many times to install it Flow, but I already a blank page after I put the database information. I can't do anything else but doing a new installation. Why did I do wrong ?
My steps
 
apt update && apt install apache2 php php-intl php-mysqli php-curl libapache2-mod-php mariadb-server git -y
apt update
apt upgrade
 mysql_secure_installation
mysql -u root -p
  CREATE DATABASE itflow;
  FLUSH PRIVILEGES;
  CREATE USER 'admin'@'localhost' IDENTIFIED BY 'randompassword!!';
  GRANT ALL PRIVILEGES on itflow.\* to 'admin'@'localhost';  
  exit;
cd /var/www/html/
git clone https://github.com/itflow-org/itflow.git
chown -R www-data:www-data /var/www
systemctl restart apache2
And I go to the setup page with the credentials created before.
Thank you for your help